Is this brown scar (used to be mole) melanoma??

I've had a small mole on my stomach all my life that has always been round and brown and slightly raised. One morning i woke up and it was itching and stinging and it turned dark black and scabbed up and 2 days later it fell off. It not just looks like a healing brown scar with a red dot in the middle and the mole hasn't grown back but it itches like crazy all the time and I feel slight pain in my stomach under the skin where it is whenever I bend over. It did this same exact thing when I was 14 years old but the mole grew back and was normal and brown after that until now. This time it has not turned back into a mole yet. I tried looking everywhere online and even the doctor didn't pay much attention to it- he thought I had just scratched it or something.. Help anyone??