Okay, good question. It's good to follow doctors suggestions and just do as they initially instructed but I can see why you are confused. Can you give the doctor's office a call and ask this question with the new info you've been spotting? They often instruct women to take clomid on days 3 to 7 of your cycle and you usually ovulate 5 to 10 days after so it would help you around the time you would normally ovulate with an average length cycle. Do you track your cycle days? Day one of your period is cycle day one, and you count from there.