So me and my so had sex, he ejactulated inside my vagina, i decided to take "plan b" i took it right at 70 hrs. Most people would know but for those who dont, you have a 72 hr max to take it after unprotected sex. So now its been almost 10 days i say i have an irregular period but its a day late but im not having a heavy flow like i was before and usually it was very light brown one day and the next dark brown and now blood later tonight. Ive tooken plan b before and usuallt brown stuff comes but like 3 days after the pill this time it took almost 2 weeks and brown stuff now. Idk if im pregnant or is it the pill. I feel very dizzy and head ache if i dont get eat. Ive been tired