Bloody nipples discharge?!

Hi everyone, sorry for the too much information but I'm really worried!!

I'm 23w+2d and since week 18 I've been having reddish-brown discharge from my nipples which I've noticed from the stains they leave on my undershirts.

Is this normal? I'm very concerned 😖

UPDATE: I did check with my dr and she checked my breasts and said that there is nothing wrong.. But I'm still concerned, should I see another dr?