Clomid users!!! Advice please

Kara
After having a d&c due to a missed miscarriage in january and having irregular cycles since, my obgyn is finally giving me clomid to hopefully help regulate my cycle. I'm suppose to take it cd3-7. I am on cd 14 today so obviously I can't start it until next cycle. What can you tell me about clomid? Side effects? Is it effective? I need all the advice I can get