I had sex on 4th feb. Again on 18 feb I had unprotected sex but I took unwanted 72 within 48 hrs. My period date was 18 feb which diet started. I had took test in 23rd it was negative. I got my periods on 25th feb which was light n brown or black but on nxt day no period in morning again it started in evening with little n brown. 3rd day it was still little and black or brown. Why ths happen? Again I took test on 3rd march it was still negative. Again I took it on 18 it was negative.in march I dint get periods. On 2nd april I had a protected sex. On 11th april I took test it was negative ?on 18 april I saw red or brown cervical mucus I thgt my period will start bt didn't started. Today is 20 april still didt started? Wat ds ths means? For 1st time in feb it happen because of unwanted 72. Bt why this time? Am I pregnant? Whn shld I tk test? Or should I take tablets ton induce periods? please reply soon .its urgent.