ok, well first off, 10mm is great
it means that you were at least building up a uterine liningg..
if you were getting clear and white mucous around the 20th, that means you were probably finally ovulating. (if you were temping, you would know for sure if you ovulated in the last few days)
IF you did indeed ovulate, you can expect within the next two weeks.
I suggest going to Fertility Friend.com and learning about temping, and the secondary signs such as cervical mucous and even cervical positiion (although that is one thing i havent tried doing.)
You are having delayed ovulation it seems if you ovulated around the 20th. This would put you on cycle day 34.
Yes, a day 3 fsh would be a good idea to see how your ovarian reserves are doing.
Im cant remember if you said how old you are, but pre-menopause can start as early as our mid thirties, FSH levels taken on day 3 can help to show this.
Also, prolactin tests should be done on day 3, at a certain time of the day, without exerting yourself first to get a good reading. If you were not instructed on your prolactin, maybe you could ask to have it done along with a day 3 FSH and a day 3 estradiol (both to check ovarian function)

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