Worried early pregnancy

I'm currently going into 5 weeks pregnancy. My 1st HCG was 7.6 IU/L then within 48 hours it doubled up to 50.8 IU/L and after 7 days it was 1028.6 IU/L. The gynae said the numbers looks like a healthy pregnancy. But something's else is making me very worried. The gynae did a vaginal scan and the womb is still empty. But she found a small round cyst kind of thing on my right ovary.. she did ask me if it's painful or anything. I don't have any pain or bleeding . Has anyone encountered this before ? And also that fallopian tubes are all fine. Theres no problem with that. Just that there's a small cyst looking kind in my right ovary. Is it normal ?