Hi, I'm 18 and I took Plan B Next Step after my boyfriend and I had sex. He did not cum without the condom, however for a brief moment (very "brief"), he was without one. In saying this, the day of taking Plan B Next Step, I appeared to have dark brown "spotting" which turned into a heavy, deep red with little clotted strands. This continued for 8 days in which the bleeding got lighter the second to the last day and then completely stopped. I am confused. I do not know if this could be a sign of implantation bleeding or my period. At the time I was taking rather large dosages of vitamin C which I have heard induce your periods. Is there a possibility of pregnancy in this situation?
(I was due to have my period the day before I took plan B)