Last month, May 2013, i saw my period twice. One on the 9th and the other on the 31st. The one on the 9th was pretty normal while the one on the 31st was very heavy with clots for the 1st two days, then the last two it was almost nonexistent. Today is the 29th and i am now 6 days late with my period. Since day 3 of my late period, I've been constipated, excessively tired (dropping asleep early), nausea (not to the extent that I actually throw up), my breasts look fuller, feels heavier and is sore. I'm also bloated and my stomach feels full most days (I can't lay on it or I feel as if i can't breathe). I've had some cramps as if my period is about to come but it hasn't yet shown up. The cramps and constipation are now gone. Could I be pregnant? and when is a good time frame to take a HPT?