Hay nako, 8cm is quite large talaga, pero don't worry, marami akong kaibigan na may cyst during pregnancy at naging okay lang sila and their babies. Kailangan mo talaga ma-monitor closely ng OB mo though, kasi depende sa type ng cyst and kung paano siya mag-behave throughout your pregnancy. A few of us nag-undergo ng ultrasound every month para ma-track, and some needed to see a maternal-fetal medicine specialist para sure na everything's safe, definitely bring this up with your doctor if you haven't already, para alam mo exactly ano ang management plan for your case. Fingers crossed na magiging fine lang siya! Keep us posted, okay?