Pregnant or what.. I need help!?

every since June 13th I've been having pregnancy symptoms.. I had unprotected sex on June 10 th which was the first day of ovulation period.. I've ask several times on this site whether or not i could be pregnant.. and bc of the symptoms each time the majority of the answers were yes.. I've taken 2 pregnancy test(1Sat. gone and then 1 sun.) they both were negative.. instantly i thought it was 2 early. Saturday i notice A drop of blood. and it was only one time and when i wiped.. well yesterday i got what i think is my period. heavy bleeding.. now 2day after only being on my cycle for 2days my cycle has dramatically slowed down.. now heavy at all.. but more than spotting.. my guess would be that 2day or 2morrow would be my last day.. i won't 2 know like what's happening 2 my body.. can i still be pregnant. also my cycle was 3 days early and if Im correct it will only last 3 days.. please help!