Hi MLDuddy,
I was diagnosed with stage 1b melanoma. I can relate to you being worried, and have to say my first 6 months were the hardest but it does get easier.
Does it go away? No. But it does get better. October 31st will be my 2.5 year anniversary out of 5 years of semi-annual checkups. While I can say you will eventually worry less as time goes on, I admit that every 6 months it crosses my mind or at times find a bump or lump and obviously think it’s returned whereas in fact it was just a pimple or cut.
I can also say that stage 1a is about as good as it gets and can only anticipate you will be cancer free in the years ahead
YOU CAUGHT IT EARLY! 
Take care and if you ever feel the need to vent there are many on this forum that will listen because we’ve been in your shoes.