Tight feeling in chest postpartum

Linda

I’m 3 days postpartum, milk is definitely coming in and breasts are getting larger and firm. We just got home from the hospital yesterday. Baby does nurse on one side every 2 hrs and I express a bit on the opposite side. But I’m also now having a tight feeling in my chest when I take a deep breath. Anyone else experience this? Is it bc my breast’s are getting larger/engorged? Or is any kind of tight chest feeling unrelated?