Anyone else just unable to wear a bra?

A
 I was a 34b a few months ago. I've moved up to a 36b and it's definitely not too tight, but after about an hour of wearing a bra (especially if sitting is involved), I am sooo uncomfortable with a burning sensation under my boobs. It's honestly to the point where I don't want to leave the house anymore! I've tried wireless, it doesn't make a difference. Anyone else experiencing this??