Ive been having cramping on and off for over a month now, with nausea, fatigue, and dizziness. i took a test maybe 3 weeks ago and there was a faintg positive but i took one today it was negative. I also had a "period" a day late on the 3rd and only lasted a day but it wasnt heavy and then after i spotted. The cramps get worse if i bend over. Anybody ever had this or know what it could be?