I need your help. I recently bought some bras that fit like a dream! But recently, I've noticed the underwire is digging into my sides (area under my armpits). My breasts have grown a ridiculous amount since pregnancy and now that I'm more active, it could just be that they're getting smaller (although, I can't exactly tell).

My question for you is, should I buy a cup down? The brand I like isn't available locally, so I'll have to buy online (which I prefer).

Thanks!