i was originally diagnosed with melanoma when i was 23. It also started with a mole which was on my arm. I had it removed and everything looked good. Now, 2 years later, there is more melanoma in my lymph node. I recommend getting the centinal node biopsy because I didn't and I'm regretting it now. Try to be strong because there is a lot of different things out there to help. And try not to worry, the last thing you need is stress.