My last period was in the end of January, I have been having cramping like my cycle is going to start, but nothing. I feel these cramps at least once a week, usually once every couple days. I have also had diarrhea, heart burn, fatigue and mood swings, not sure if this is related or not. I took 3 home pregnancy tests, within about a 4 day timeframe in mid-March, all negative. I am sexually active and the only birth control method being used is the withdraw method. Do you think I am pregnant or is something else wrong?