I have a small bit of damage on my nose, went to doc who said sun damage, take a photo every couple of months, if it get worse come back.

i also have a flat bit on my arm which has been there for years.

About a month ago,I saw a black rough edged mark on my leg, immediately thought melanoma, saw practice nurse, who took photos and sent to skin specialist.  I forgot to mention other two things.

Now, black mark has disappeared, but I have received an appointment with a dermatologist, and I don’t know whether to go along and say I’d forgotten about the other two things, it sounds so stupid.  
Any advice welcome, thanks.