I haven't gotten mt period for 4 months now. I tookpreg. Test n dey come out neg. Dis had hapend to me last year too n den I got my period wats hapen?

Irregular periods. Your question is a good one and has many answers from thyroid and hormone problems to pregnancy, even sometimes caused by medication. If you can, you should check another pregnancy test. If you have problems with weight gain, fatigue, feel cold or hot most of the time then you may need to have your hormones checked by your doctor.