Last night, i started getting these period like cramps in my abdomen . Few hours later, my lower back began to hurt. I m not on my period, even though I was supposed to start a few days ago. The pain is so bad, that it hurts to walk. It even hurts to pee. I m very bloated. I took a home pregnancy test , but it came out negative. i took some midol to try and alleviate the pain, but it hasnt worked. Now, i dont know what it could be.