hanks for consulting. I have carefully worked through your case, and I can realize your health worries. Being your physician, I assure you not to worry as I will take care all of your medical concern. fibroid do increase in size because of estrogen. but do not worry your doctor knows about it and every thing will be taken care. the condition of the fibroid will be closely monitored throughout the pregnancy. as far as i have seen many women with fibroid have normal pregnancy and delivery. Hope it helps. If you need further, detailed and quick assistance related to any health issues in future, feel free to ask me a question directly from my profile. Have a wonderful time ahead. Best Regards! Dr. Arunmozhi varman