I've had a faint reddish mark, slight raised ridge on my right 3rd finger nail for about 2 years. I wore acrylics a few years before that so always presumed it was damage from those. I went to get my nails painted today at my local beauty parlour and the lady asked if I'd always had it and had it always been so prominent. I explained I've had it for a few years and she mentioned melanoma and to get it checked out. I'm now worried sick and can't get a gp app till next week. From what I can see it's mainly really dark brown/black lines that are worrisome but I can't get this out of my head now. The nail is a little red horizontally as I've just buffed the gel off so it's a little red and bruised.  Any advice?