Finding it hard to accept good news

I have had 3 moles removed in the past, one mole I had 3 surgeries on to remove it all, I’m quite high risk for skin cancer. But recently I’ve been concerned about a tiny 2mm spot on my chin. Usually, I don’t notice it as it’s flesh coloured and blends in with my skin albeit slightly raised. I’m ashamed to admit that it’s been there for 6 years - I just forget about it as it doesn’t really bother me. I only know it’s been there so long as I mentioned it to my GP in 2019 who said it appears to be a wart.

It’s now started to become inflamed, red and a little crusty at times so I went to the GP today who kept saying if it changes or doesn’t heal come back, but ultimately it’s just a spot. He confirmed it’s not a wart after all. I tried to explain it’s been there for 6 years and it HAS changed. He showed me photos of the different types of skin cancers on Google, and said mine doesn’t look like that, which I know it doesn’t but I also know, as a nurse, that all skin cancers can appear slightly different. 

I don’t know if I’m being overly anxious and just finding it hard to accept that everything’s ok - I don’t really know where to go from here. I feel a bit dismissed and stupid for working myself up so much. It’s so hard to tell if it’s worth going private to see a specialist to get their view, as I’m just concerned about the length of time it’s been there alongside it becoming inflamed.