negative pregnancy test.

brittany

I am 22 days late and 3 mo the off the pill. I have gotten back to s of negative pregnancy test , but still no period. I am starting to have small cramps and heaviness in my pelvic region. no breast tenderness or cravings or sickness. I can't get in to see my doctor till AUG.Do o maybe need to get a HCG blood test? Just need suggestions since it's 100.00 to get a blood test. thanks in advance