Abnormal breast shape?

I feel like a dummy for asking but I’ve been noticing my right breast gets really bizarre and lumpy when full. It’s not painful and doesn’t really feel engorged. (Usually 4-5 hrs from last feed). It seems like it smooths out mostly after I feed my baby. I’m 10’months postpartum and have noticed it the last month or month and a half. I am on my third baby, and never noticed this with the other two. I don’t feel any hard lumps/masses. Anyone else have this issue?