I had sexual intercourse with my partner and he did not use protection, I took the morning after pill (Plan B) the very next day and 2 days latter i was bleeding. The bleed went away after 4 days, it is has now been about 3 weeks and a half and i'm 2 days late in my period, I've been feeling fine until now... I've been dizzy and with very little appetite. Could i possibly be pregnant?