Not medical advice. ClearTerm Health is an informational resource created by a patient advocate, not a medical professional. Always consult your doctor or MFM specialist for guidance specific to your situation.
A diagnosis of placenta previa or placenta accreta spectrum can feel overwhelming. This page was created to walk you through what it means, what to do next, and what to expect — one step at a time.
Whatever you're feeling right now — fear, confusion, grief, or even relief to finally have answers — all of it is valid. This is a lot to take in. Give yourself permission to go slowly.
These are two different conditions — but both involve the placenta, and both require specialized care. Here's what each one actually means in plain language.
Normally the placenta attaches high in the uterus, away from the cervix. In placenta previa, it has attached lower down — partially or completely covering the cervical opening. This means your baby cannot safely pass through for a vaginal delivery.
The most important thing to know: many cases of previa resolve on their own as the uterus grows during pregnancy. A previa found at 20 weeks often migrates upward by 32–36 weeks.
In placenta accreta spectrum (PAS), the placenta has grown into — or through — the wall of the uterus instead of sitting on top of it. This makes it very difficult to separate after delivery, which can cause serious bleeding.
PAS is most common in women who have had prior C-sections. It has three levels of severity: accreta (into the wall), increta (through the muscle), and percreta (through the wall entirely).
In carefully selected cases — typically lower-grade accreta in women who strongly desire future fertility — conservative management may be considered at specialized centers. This involves leaving the placenta in place and monitoring for gradual resorption rather than removing it surgically. It carries real risks and is not appropriate for everyone, but it is worth asking your MFM specialist about if preserving your uterus matters to you.
I wish someone had told me that a diagnosis doesn't mean the worst outcome is inevitable. It means you now know something important — and knowing gives you and your care team the chance to prepare.
— Reflected in peer support communities for PAS survivorsYou don't have to figure everything out today. Here are the most important things to focus on right now, in order.
It's tempting to spend hours on Google after a diagnosis. Some of what you'll find is outdated, overly clinical, or focused on worst-case scenarios. Give yourself permission to gather information slowly and from trusted sources. ClearTerm was built specifically for this moment.
Stick to sources like ACOG, SMFM, National Accreta Foundation, and this siteIf you haven't already been referred, ask your OB for a referral to an MFM specialist — a perinatologist who specializes in high-risk pregnancies. They will guide your care plan, order additional imaging, and coordinate your delivery team. This is the single most important step you can take.
If you have PAS, ask specifically about delivering at a Center of ExcellenceYour MFM may recommend a follow-up transvaginal ultrasound for more accurate placental measurement, or an MRI to assess the depth of attachment in PAS cases. These are important diagnostic tools — not something to be afraid of. The more your team knows, the better they can prepare.
MRI is safe during pregnancy and provides detailed soft tissue imagingMost women with previa or PAS are placed on pelvic rest — no sex, no heavy lifting, no strenuous activity. This is to minimize any disruption to the placenta. Your provider will give you specific guidance. Follow it carefully, even when you feel fine.
Bed rest is generally not recommended — but pelvic rest is differentYou don't have to carry this alone. Whether it's a partner, a parent, a close friend, or an online support community — sharing your diagnosis with someone you trust can significantly reduce the emotional weight. The National Accreta Foundation runs closed support groups specifically for women going through this.
NAF Support Groups → preventaccreta.org/supportFor PAS in particular, where you deliver matters enormously. Research has consistently shown that outcomes are significantly better at hospitals with dedicated, experienced PAS multidisciplinary teams. Use our specialists page to find a Center of Excellence near you.
Find a Center of Excellence →There is no right way to feel after a high-risk diagnosis. Whatever you're experiencing — all of it makes sense. Here are some of the most common emotional responses women describe.
Fear is the most common response. Fear for your baby, fear about surgery, fear about the unknown. It's completely normal. The antidote to fear is information and a care team you trust — both of which you can build.
You may grieve the pregnancy you expected. The birth plan you had imagined. The sense of normalcy. This grief is real and valid, even before anything has happened. You are allowed to mourn what you thought this would look like.
Medical terminology is overwhelming. You may have left your appointment with more questions than answers. Write your questions down — no question is too small. That's exactly what the next section is for.
Many women describe an intense surge of protectiveness for their baby after a high-risk diagnosis. This is a strength. It will drive you to ask the right questions, find the right team, and advocate for yourself and your child.
Previa and PAS are not widely known conditions. You may feel like no one around you understands what you're going through. Support communities of women who have lived this experience can make an enormous difference.
Many women find that once the initial shock fades, it's replaced by a quiet determination. You are already taking the right steps — seeking information, building a team, preparing. That determination will carry you through.
The diagnosis changed everything — and also nothing. I was still me. I was still her mother. I just had a lot more to learn, and a lot more people on my team.
— Commonly shared in PAS survivor communitiesWrite these down and bring them to your next appointment. You don't have to ask them all at once — but having them ready means you won't leave the room wishing you'd asked something.
Most of your pregnancy will be managed through careful monitoring and scheduled appointments. But there are specific symptoms that require immediate medical attention. Do not wait — go straight to the ER.
Even light spotting should be reported to your provider immediately. Heavy bleeding — soaking a pad in an hour — is a 911 emergency.
Sharp, persistent, or sudden abdominal or pelvic pain — especially with bleeding — needs immediate evaluation.
Dizziness, fainting, rapid heartbeat, confusion, or feeling faint — especially with bleeding — can indicate blood loss. Call 911.
If your baby is moving significantly less than usual, contact your provider right away or go to labor and delivery for monitoring.
Regular contractions before your planned delivery date — especially with previa or PAS — require immediate evaluation.
Trust your instincts. If something feels off and you can't reach your provider, go in. You are never overreacting when it comes to your health and your baby's.
Healthcare providers would always rather see you and send you home than have you wait at home with a serious complication. You are never a burden for seeking care.
Call 911 in an emergencyNow that you understand your diagnosis and know what to do immediately, explore the rest of ClearTerm to go deeper on any topic.