im 22 yrs ,i have my periods always regular and i hd my periods on 13 june and had sex wd my hubby on 24 june n thn after 5 days of ths i tuk postinor for the first tym on 30 june as he didnt want a baby, as my periods is due on 13 july, i started getting very sharp n bad periods cramps with back pain, i thought its because of my periods but on 14 i got spotting n it was blood de next day again i was bleeding for a while but very less jst once n it continued 3days, i didnt had to wear anything coz every time i wear a pad der was nuthing but i knew it was blood as when i wipe it out i could see blood and it touched my panty also but i didn't had the bleeding which continuous at the time of period. now its 18 july n i feel im normal but i took a home pregnancy test on 17 july n it showed up negative, can sum1 pls advise me wats it , am i pregnant or is it just because of the postinor pill i had taken???? does postinor make our period stop or dealy or this type of blood??? or was it a miscarraige ??? but i didnt bleed dat much??? pls pls pls answer me im soooo worried