Help with sensitive breasts

I've been experiencing so much tender and sensitivity that it's painful. I am using bio oil to relieve itchiness and redness. But this only helps with the itchiness, I really need something else because I feel miserable. I don't know how to describe it but it's almost like a pinching pain. And in the cold it's worse. I don't wear bras anymore during the day, I only wear sports bras now. I don't know what's the proper bra to wear during pregnancy. I need some advice. Thanks.