Ever since I had my first son, my periods have not been normal I get it like every three months . I recently took progesterone to make me get my period and got it for 3 days then it went away. I'm not on birth control and I am still with my sons father and we don't want to have another but we also aren't staying protected from another one. But now about 3 weeks after my period my boobs are SOOO SORE. I don't think I'm pregnant but I also don't think it's my period because it never is regular.... Do you think I could get pregnant even though my period is that irregular and would my boobs be this sore so soon? (Never felt my boobs hurt this bad with my son)