Clomid.

So obivously i got bfn once again... :'( I'm going on round 5 of clomid here soon. So I wanted some opinions. The Dr percribed me 100mg for 5 days.. but initially he told me to take 2 -6 day. But I recently been told to take on day 5 -9. Which one do u guys perfer...? The Dr told me it didn't really matter when u take them as long as u take them after u bleed. . This is all craziness when I'm only 22 years old... I already have one child. With my husband... I know nothing is wrong with him. And all my test for hormones and everything come back normal... ugh so frustrating! ??