emmak.....you pose a complicated and complicated question to answer.
Firstly, I am surprised that you have not received a follow up appointment as these questions should be put to your Consultant Gynaecologist and hence I would phone his secretary for an appointment.
I am not a Gynaecologist BUT:
The removal of one ovary ( Unilateral Oopherectomy) might impair your ability to conceive, but not to a major degree, if at all.
You need to discuss your other queries with your Gynaecologist........sorry.