Gently squeezed nipple and bloody discharge came out?

I very gently squeezed my right nipple and normal Colostrum came out (I do this when my breasts get really itchy and I found it relieves the feeling) and then I did the same to my left nipple and blood comes out of one part and Colostrum out of another. I did this twice and I won't try again. Is this normal? Other then that I don't have any other breast issues. Also my nipples are not dry at all. 30 weeks pregnant

- been wearing a black bra so unsure if it has leaked at all prior to this