Underwire bra after pregnancy

Clarissa
I don't where to post:
How can you tell if the underwire lined bra truly is uncomfortable vs uncomfortable because you've not worn one in months, nearly a year? This is the first one I've worn since I got pregnant last summer and it seems to fit but it's uncomfortable over my ribs. 
Edit: I wear 40D size bras so I don't know whet else to wear to provide the support that I need.