On Dec.12 I had unprotected sex then the next morning I took the plan b pill at 10:53 am ..for the next five days I've been experiencing headache, tiredness,dizziness,soarniss,and cramps but this morning dec 19 at 6:30 I started having diarrhea and vomiting and yesterday dec 18 my period came on and I just wanted to kno is the pill working because I don't want to get pregnant