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For the past four days I've been having painful stomach pains and back pains. This is going to sound nasty but everytime I eat my stomach will feel very painful like I have to barf but I take a shit instead like diarrea and ill still feel like I have to barf. After I shit I get more hungrier and ill go to my bed and curl up into a ball crying becuz the pain is so painful in my stomach. At night its hard for me to sleep becuz my back is in such bad pain as well. I tried pepto bismol and pills and I'm still feeling the pain. I was soppose to get my period either on the 18th or the 19th of this month and I think I'm late or something,I DONT think this could be pregnacy becuz my b/f doesn't c_m in me, his pre-c_m does but not the sperm. Can you girlz help me understand my painful problem,pleeze?