Clomid and Provera Questions

Kayla
My doctor put me on Provera and Clomid this month for the first time. I just started AF tonight (about 6:30) on day 3 of Provera and am supposed to start Clomid on day 5 of my cycle. Should I count today as day 1 even though I started so late? Also are there any side effects of Clomid? I am normally pretty sensitive to medicine and start full time teaching the day after I'm supposed to start taking it so I'm nervous.