The other day I noticed my boobs smelt like sour milk and I thought because I havent had a shower in few days (I know gross, been busy moving) so thought nothing of it. Well today I decide to go for a swim with friends. I go to change into bathing suit and I smelt the smell again. I had a shower last night so it worried me. I had unprotected sex exactly 2 weeks ago but I'm on birth control. I'm just confused on if its just my body being weird or something else. Help?