Hi Tina, and welcome to the forum! I just started my second round of femara/menopur today, so I'm hoping to have a success story to share towards the end of the month :-) As for your follicles, if you will be taking an HCG trigger shot before your IUI, all mature follicles will be released, whether or not they are the dominant ones, so if you have a lead one on your right side now, chances are it will mature and release.