it has been 22 days since he came in me and 15 days since i was due my period. i have never been late before and usually have a cycle of 26/27 days. i have been getting cramps and i dont get them when im due my period. ive got sick 3 times last week. yday 14 days after my period was late i had brown discharge but then stopped we also had unprotected sex 8 days ago. i did 2 pregnancy tests both negative. could i be pregnant? or what else could it be?