:/ feeling anxious and anxiety building :/

as i explained in my last thread i have massive health anxiety and i guess its kind of beta if your female and you read this haha only because you will understand more.

i have spoke to my mum about this and she has said its just heat rash or something like thats and thats its normal and she gets them all the time but because of my anxiety I'm obviously panicking a bit because one its not under my breast (which she says it fine to) and 2 because on my anxiety...
i even showed her because its hardly big but in between my breast there is a small rash only like 4 small patches but really small they've been there a while but hardly long,and they don't itch or hurt at all. I'm wondering if its maybe the material on something or its just something to do with heat but I'm just you know anxious because thats the way i am. I'm trying to distract myself but i just wanted to post on here to get it of my chest i guess :/