Rash on neck

Rebecca✨ • 29,FTM to my 2 year old daughter && coffee-obsessed!

Hi ladies I noticed yesterday that I have a patch of skin on my neck/chest that is red. No itchiness and it has not spread since my discovery. I posted pics of yesterday and today for comparison. I don’t have a dermatologist appointment until November (😓) so I’m hoping some of you lovely ladies would help me out. Does this look like that pregnancy mask ? Or something else? Top pic is yesterday. Bottom pic is just now.