Pain developing in armpits

Holly • Girl mom 🎀 baby 2 ➕

Is this a sign that I’m doing something wrong? I’m getting pain / achy-ness developing in both my armpits kinda reaching towards my boobs. I know there’s milk ducts that come from over there so idk if this is a normal thing to be experiencing or a sign that something is going wrong. Im about 11 days PP.