What if my period is the normal amount but it's too early for my period . i just ended 2 weeks ago . but i did take 4 plan b in one month ?

That is pretty: frequent use of Plan B. May be side effect. Potential side effects w emergency contraception includes menstrual flow changes (spotting, bleeding, early or late period), nausea, vomiting, dizziness, fatigue, headache, breast tenderness & abdominal pain or cramps. Take pregnancy test & notify dr if your period is 7 or > days late.