i'm 35 and had a tubal ligation when i was 23 - my last period was 8 weeks ago. about 7 days ago, i had a strange bought of nausea for about an hour or 2 (which i experience with my 1st pregnancy) and then it was gone. now, i'm still not showing any pms symtoms and today i started lactating from one breast!!!!! could i be pregnant?