Confused

The day that I was supposed to ovulate (yesterday) my breast were itchy, and I had light cramping along with a mild headache...almost similar to the start of a period. My husband and I had been doing the deed off and on since the day my period stopped(July 10th)...could that be ovulation or could I have already ovulated and am now experiencing symptoms of early pregnancy or is this normal? My cycle only lasted 5 days this month...it is normally 7 days. In the past when I have ovulated I never had any of these symptoms. Idk what to think, I do not want to rush out and test too early...or should I? Today I have the same symptoms (headache, cramps, feeling a teeny bit nauseous).