Hi,me and my hubby had intercourse on ovulation day (13 and 15 of july)immediate after that day started having cramps , dizzy and tired sometimes nausea too...but has my period on time(aug 1) but first day it was too little ,second day ok bit third day again little and stopped..did test with home pregnancy test on my 4th day of period , came negative . But still having mild pain in abdomen,back and feeling some nausea too. But now no dizzy .past 2 days not getting good sleep too ? Am I pregnant?