What Are The Side Effects Of Depo Provera Injection?

Hallo Doctor, I took two depovera shots and was due for my third on 1st April 2010 which i didnt go for. My period has not come yet and i only spot as a period. My gynaecologist prescribed combined pill which made my period come and later prescribed clomid which i started taking on 26th/july/2010 my fifth day of the cycle. When am i ovulating while on clomid. Thank you