This is definitely something you need to talk to your doctor about because your days might be different but usually a doctor will say to take Clomid from Cycle Day 3-7. A friend of mine had to take it through these days, but please contact your doc and if you can't get through to him/her than leave a message with a nurse cuz she could probably let you know.
I do know for a fact Clomid is taken at the beginning of the cycle but it could be different days. I'm wondering normal when you get a prescription it will say the dose and day info on the bottle or paperwork. Does yours? GL!
Your doctor should have told you exactly when to start and stop Clomid. I have heard of women taking in on days 3-7 or 5-9, but only a doctor can tell you what is right for you. I hope you are being supervised by a doctor on this medication. It wouldn't be a good idea to be doing it by yourself IMHO.