Hi Jane and welcome!
You are not alone worrying about everything. I know it's easier said than done, but the process is so much easier if you relax into it and go with the flow. Ask questions, however! As many as you can - I've heard so many people on these boards using the phrase "information is power"!
Regarding the number of follicles, this varies greatly between women. My clinic need to see at least 3 follicles of at least 17mm before they will do egg collection. I was very slow to start off with - had lots of follies but only very small in size. I panicked (bang goes my advise about relaxing!!) but did catch up.
If you post over on the genral forum, you'll find more people over there. You may like to join "november Buddies" as that's where everyone actually going through treatment hang out!
Good luck with everything - you are in good company!
Cla
xx