I give up.

I don't know what's going on with my body anymore. My last period was on April 10. I had a day of bright red spotting May 13. I had  3 1/2 days of on and off spotting of dark brown discharge and bright red blood. Other than that spotting I've had no periods in May or June. All my tests are saying negative , blood as well. I had one last Tuesday with a faint positive, but then two dollar store tests that said negative. I have all the symptoms associated with an early pregnancy but nothing. Cramps were the ONLY symptom I would get with my period. I'm having cramps, backaches, sore breasts, etc. I'm beginning to think I don't even know my own body.