About to start 1st Clomid round... What can I expect?

Jennifer
I am on my 7th day of Provera... Still no af! Once af starts I am to start my Clomid on the 3rd day. Once I start the Clomid I have to go for a ultrasound to find a good follicle and to get a HcG shot to force ovulation. What can I expect from the Clomid and HcG as far as side effects?