Actually I had irregular periods for past few months(for 5 to 7 days late). My last period was 28th nov. It came on 1 day late than the previous period. After 2 weeks of my periods brown discharge came for 2 days.then on dec 26th spotting with abdomen pain I think it was my period but it last only 1and half days only. Then stops and on actual period date light bleeding but not heavy. Only one pad is only needed for the whole day. On 2nd day it stops. I took pregnancy test. It came -ve. I don't hve pregnancy symptoms,no tendency for vomiting ,now for 2 days only thing thereis light body pain, and light abdomen pain. I think it will be climate change problem. Why I bleed only 2 days? Will menses come again?I don't hve any tendency?I wish to be pregnant?please help me...

There's many possible causes for any of those symptoms. Improper nutrition is a common cause of menses ceasing all together in young women. Your body needs sufficient fat & iron amongst other things to prepare for bloodloss and just generally manage the effects of estrogens. Try a more balanced diet including milk and perhaps red meat and things might improve. If there is significant pain or you have a history of problems, you should really call your doctor.