So my boyfriend and I had unprotected sex on Jan 17,18, and 27. On the 28 and 29, I had spotting. The typical sounding implantation bleeding spotting, much lighter than a period barely anything and was dark red but mainly brown. Since the spotting stopped (going on 3 days), I've had mild cramping in my lower abdominal. As of today my period isn't due for another 10 days, so it's too early to test. My typical cycle time is about 32-36 days. Today, I did an ab workout and had pain or much worse cramps than I have felt before. Idk if that could be a sign. Also have been sneezing, burping, and gassy more than normal yesterday and today. What are your opinions??? Could I be pregnant???