Hi . Im jek 22 I am having avnormalities in my period. My expected periid is on jan25.. But it comes on jan28, but it stays fir only 2 and a half day and it differs frim the usual.. This period is not heavy. I felt the sore tender breast, fatigue, I'm always hungry I have back ache.. After 2 days of period, I have spotting that stays for an hour, an old blood.. And then after 2days again all the symptoms gone . And then followed by spotting again this time the color is bright red. I tried a pregnancy test but it says negative.. Please help me.. Thanks a lot..

I assume that you sexually active? It's too soon for a pregnancy test, even if you count 1/28 as a non-period.
It is common to have some months that don't arrive on schedule and are lighter (or heavier), and which have symptoms that mimic pregnancy.
So there is nothing to do but take tests of first morning urine every 4 days or so, until you do or don't get a period that seems 'real' to you.