I have been very sexually active with my boyfriend of two years neither of us use contraceptives. Lately i feel very out of sync with my body. I got my period 01/02/14 it was only three days however it was an abnormal color it aas bright red with some little clots. My eating habits have changed some. I dont ever really feel like but when i do all i was is homeade mac n cheese. Every now and then i feel nausea but only vomitted once. My breast and stomach became very veiny and sore i have had severe cramps in my uterine area and extremely tired taking naps now everyday. Unlike myself. I have takin three at home tests all negative and had a blood test recently for a different health problem but it all came out goodand didnt show i was pregnant. Does anybody have any possible answers im nervous and confused!