Weird Cycle

Caroline
My Highest Ovulation Dates were March 24th,25th,26th. We had sex all 3 days 2 times a day. I took PT test and was Negative. I was to start my period April 9th..it started with Brown spotting on the 6th. The morning of the 7th Heavy normal period Flow and color as well as on the 8th. This Morning on the 9th Period was gone. No spotting or anything, my period is always 4 to 5 days normal cycles.. Should I take another PT..? Any one else have this happen...I never have especially when TTC.