What CD do you start Clomid?


So, I didn’t ovulate on 50mg during my first Clomid cycle. We took a few months break due to travel. Dr. increased the dosage to 100mg. I’m on CD 5, which is the day my doctor told me to start. I plan on taking the first dosage tonight. I’ve noticed some of you were instructed to take it days 5-9 and some days 7-11. I’m wondering why. Is there a difference? Does one range have better success than the other? Or is it just simply what the doctor advises?


100mg is supposed to work in some that 50 doesn’t.