Hello, not long ago i felt from my bottom belly button, down to the top of my vagina, a sharp pain go down. Quick, straight, no curves, a long with that besides the sharp pain, after i had a really bad cramp, i have irregular periods and hvent gottwn mine its been 2 weeks, i tested on the 1st week it was late, but got a negative result, im going to test again soon but what could it be? I poop and pee well, and i workout