I've had sex on my fertile days for two weeks and my most fertile days were from July 5 to July 9. We did it before, during, and after those days. I feel cramps like I'm getting my period and I can't test yet because I won't get my period until 5 more days.

First you don't know that you are not, and are you using body temp to find your ovulation time frame, not just number of days from cycle ?

Also often couples who are trying can take months even up to a year or more to get pregnant. Seldom happens the first month you try.