I'm having trouble telling if I'm pregnant or not... Actually my period is March 10,2012 but it came on 26th of March suddenly. It was just a 2 days period. Usually my period last 5-6 days... What I am going to do? I tried this pregnancy test before my menstration but the result is negative..

A lot of things can influence your period. Have you been stressed/angry/depressed lately? If not you should really check up the doctor.

Wait until April and see what happens when you would expect your period. Sometimes periods can just be off. If it doesn't show, or is unusual from what they normally are like, try another pregnancy test or see your doctor.