Rash? Eczema??

On my daughters belly and sides... not sure what this is. I keep lathering her in eczema lotion. It spread down her legs this morning but it seems like dry skin on that area. She is teething right now and has 2 teeth that broke through but not sure if she can get a rash on her belly from teething... any moms seen this or know what it could be? I have a DR appt for my daughter tomorrow but wanna see if I can do something before then. Doesn’t seem to bother my daughter.