I wanted to offer some support. Melanoma is my current fear as well, and it is a hard one to break. I'm not a doctor, but your moles that you posted don't look abnormal. I have an oddly shaped one on my arm that my derm said was fine and it's been there for a long while with no changes. I am near your age (23) and melanoma is pretty rare to begin with, but it is really rare at our age. Over 90% of cases are out of our age range (20-34) with that being skewed towards the higher ages in that range I imagine, make it even more rare at our age.