I breastfeed as well as formula feed my baby boy (long story which I won’t share atm) - so now my left boob is always itch right on the top side....sometimes it looks very read, sometimes my nipple looks read but then it goes away. I sometimes feel a deep pain coming from the bottom part of the nipple but then it does away....I don’t produce a lot of milk (hence why the formula) so I takes a while for mi breast to get full...so why are my breasts itching so much?