I took plan B for the first time within 24 hrs and I didnt really have any side effects. About six days after I had what felt like my period but it only lasted two days and that was on feb 6th. It is now march 2nd (march 6th would be exactly 28 days from the "period") and I had a little bit of red spotting, then some light brown spotting that only lasted a day and wasnt a lot at all not even enough to bleed through. I scheduled a doctors appt. but i have taked 3 pregnancy tests and they have all be negative? Idk if the bleeding i had yesterday was from my old period because that is usually when it would be...and its just confused??? lol Idk. Help???