Dry rash between my breasts

Caii

I’m almost 31 weeks pregnant, early in my pregnancy I was diagnosed with eczema on my breasts . Remind you I only wear maternity bras since I found out I was pregnant. It did go away with the help of my doctor. Now I developed a rash under and between my breasts. It tends to get dry yet doesn’t itch what could it be? How Can I treat it? 🤦🏽‍♀️