OK, so I got my period on February 4, 2015 and it's already March 25th and my period is still MIA. I took 2 pregnancy test like a week ago, but they were both negative. What throws me off is that Ive been cramping for the last 2-3 weeks but my period never comes. I also have been having headaches, nausea, and a few days ago I actually vomited, but thought it was bcuz of my headache. I'M also super sleepy and tired lately, so I'M all confused. Has anybody gone or is going thru something like this? Any info is greatly appreciated.