Hi, I am 25 year old female and 3 days late for my period, bloated with gas, headaches, lower back aches, swollen armpits, sore nipples, and from time to time I get severe sharp cramps in my lower abdomen that last for a few seconds. Once these go away, I get dull cramps for a few minutes and then they disappear! Have normal cycles of 29 days. Husband and I aren t using birth control .