Bra rubbed a sore spot by my underarm. How can I heal it?

I accidentally wore a bra the other day that rubs and digs it bad. I was in a rush to get to work and just grabbed a bra. I didn't realize that was "THAT" bra and I had forgotten to throw it out before.

I had to work a long shift, so by the time I got home, I was sore where the straps go. On my right side especially, it left a bad red mark that STILL hurts even today (like 3 days later).

Now I have a little mole right by my underarm on the right side. It's literally RIGHT by where the bra left the sore spot. Well, the mole now feels rough to the touch.

Should I freak out and worry about it possibly being suspicious/cancerous? Or did it just get rough from the bra rubbing incident? I plan to go get it checked at a dermatologist just to be extra sure. I also want another one checked too.

But I was just curious of if the bra really could have made that mole feel a little rough since it rubbed right where it is.

Bonus - how on earth can I make that sore spot feel better? The redness is going away (pinkish now) but it really hurts still when it's touched. Tips on how to heal it?

Bra rubbed a sore spot by my underarm. How can I heal it?
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