Is this eczema? Should I take her to her dr?

Marisol

She’s had this for a few days now and doesn’t seem to be getting better or worse. I’ve tried using cerave lotion, nipple cream, bag balm and none of those have made much of a difference. I don’t know if I should worry. She does have her 4mo wellness check on the 9th. Idk if I should wait or not?