Circle Rashes

Advise naman po. I'm on my 15th week and I got these rashes all over my neck down to my chest. I'm applying ointment naman po nag d naman po sya na e irritate na pero dumami pa po sya. Is it natural lng po ba? My OB said it's sometimes part of pregnancy pero dumadami po sya😔#1stimemom #pregnancy #advicepls