Talk to Gynecologist on Periods Pregnancy

hi please approve this post i am taking yaz med for birth control this month my periods came late 5 days late.and i am not having proper perioda it just spot ajaty hain 2 4 dafa din mien thora sa.i took pregnancy test which came negative.i m feeling weird like i am pregnant.please tell me k mai kya kerun kyun k mujhe 5th day med start kerni hai its 3rd day already.muje pait mien ajeeb sa feel horha hai.