this is goin on with me too. me and my boyfriend had sex on Feb 10 and my period usually starts on the 1st or 2nd of each week and last for about 5-7 days and the first days are pretty heavy and i have horrible cramps. well we used condoms but i am not on birth control. and the whole month i was really tired, moody, neasous randomally and i would have dizzy spells for no reason not to mention a lot of headaches…then i was a week late on my period and i started having horrible cramps but nothing happened just one spot of brown blood. then at the end of the next day i started but it was not really heavy and it lasted for 2 days and i had no cramps at all which was really odd!! and on the 3rd day i just had a little spotting…now its march 23 and i still feel like this except now my nipples are sore to the touch and seem bigger…i dont know if i am just scaring myself…do you think i should just wait to see if i start in the beginning of april to see if i start and if its short or i dont start take a test???