Hi. My boyfriend said that when he sucks on my breast (nipples) he get a bitter taste especially when im really turned on (it doesn't hpnd earlier) and my rest of the breast tastes normal. So im just wondering if this is something normal and is this because of secretion of hormone called prolactin or oxytocin? After figuring out most internet theories I want to let you know below few things abt me: *I shower at least once a day and I always clean very well *I am not pregnant, and just had a pregnancy test *I have never been pregnant *They look completely normal, no rash or swelling or lump *There is not discharge of any sort. Please help.