Dark spots between boobs

Been noticing I’m getting these really weird blotches between my breasts , never had this before till now that I’m pregnant. I have no idea what it is ..

Skin Concern] The skin between my boobs is not smooth. It has these very tiny bumps and there's also a dark line down the cleavage (pic 1). There's clogged follicles on the

Blebs, spots, or milk blisters on the nipple

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