I'm 25 I got my period on nov 7 it was heavy then the next day it stopped and it came back 2 days later but really light then it stopped then 2 more days it came back and stopped again. Then 3 days later I was spotting. I usually have a regular period it lasts about 7 days and I haven't been on birthcontrol in four years and I get tingling feelings in my breast and then they go away and I am so tired. Can I be pregnant? Also can taking prenatal vitamins help you get pregnant?