8cm cyst found in first ultrasound done in Week 7

Oh congratulations on your pregnancy, and I can understand why you're anxious especially after your previous loss, please know that finding a heartbeat at week 7 is already a really encouraging sign! From what I've generally heard, an 8cm cyst is definitely on the larger side and worth monitoring closely, because while many cysts do resolve on their own, there's a real possibility it could grow further or cause complications like pressure on the uterus, risk of rupture, or even affect the baby's positioning later in pregnancy. The key thing most people seem to say is that serial ultrasounds are really important here, you want to track whether it's growing, staying stable, or shrinking, because that will guide what the doctors decide to do next. A friend of mine had a similar situation and was referred to a maternal-fetal medicine specialist early on, which gave her a much clearer picture of whether watchful waiting or intervention made more sense. Do make sure you raise any pain, sudden cramping, or unusual pressure with your doctor immediately, as those can be signs the cyst is twisting or rupturing, which needs urgent attention. Of course, every case is a bit different, so do have a detailed conversation with your OB or a specialist who can look at your specific scans and history, they'll be best placed to advise you properly.