Thanks for your query. As you mentioned your PCOS
is under control, so nothing much to worry, most abortions are due to aneuploidies in the genetic makeup, so keeping this in mind try for next cycle to get pregnant and immediately start with progesterone
support and antioxidents. Regarding the cyst, if it is SIMPLE, CLEAR AND SMALL in size just ignore it, as it can be a follicular cyst
I hope this information has been both informative and helpful for you. In case of any doubt, I will be available for follow ups.
Wish you good health.