So I've been on birth control for 6 years and I've always not been so good at taking the pill all the time. I had my period rite after my birthday at the end of January and then started back on my pill. I missed a couple days and spotted for a couple days but used no more than a panty liner. I finished taking the rest of the pills for February but never got my period. It's now March 18 and still haven't got it. Took a test 2 wks ago, negative. I've been being super moody, hungry, cramps with not even a spot, heartburn at night, and my breasts tingle or are sore at random times? Normally I would write it off as stress but its been over a month. Help?