Provera help

Tierra
In Jan, my RE gave me Provera and instructed me to take it on the first of every month for AF. My first dose was Feb 1st and I started my cycle on the 18th. On March 1st, which was actually cycle day 12, I started my dose as instructed. I had been tempting since my end of cycle last month. I started to have some ovary pains on both sides on Friday although my temps were still low. On Sat 3/8/14 cycle day 17, my waking temp jumped way up and I was having more pain in my ovaries, so I decided to take an opk to check. It was positive. I still have two more days of Provera to take and I know it's too late now to stop. Is it possible to concieve while taking Provera? If you do concieve, will it force AF anyway? Btw, im only taking Metformin.