Ovarian cyst

I went to the ER today because I almost passed out doing nothing and was taken back almost immediately. They tried to shrug off my symptoms because I'm pregnant.... they did an EKG test, took blood and a UA. Around 6 pm they took me back to do an ultrasound for the baby and see if the baby is where s/he is supposed to be growing... my results come back that I have a cyst on my right ovary, baby is measuring at 8 weeks 6 days. The dr never told me how bad the cyst or cysts are and she only told me to follow up with an ob/gyn.. I'm nervous, idk what this means for the baby at this point and I can't call to get into the dr into Monday. I'm so scared right now, I don't want to lose my baby and idk how high the chances of that are.