Clear mole like growth

Maybe a year ago I noticed two bumps form on the inside of my elbow about 2-3 inches apart.  I thought they might be ant bites but never got itchy. They are raised almost clearish color with a hint of pink. They are no bigger than the tip of a pin. Recently two more appeared on my thigh but they are even smaller. I squeezed the larger ones on my arm before to try and pop them with no succes.  Not much feeling in them.  I'm curious as to what they could be.  One on my arm was bleeding but i think i might have scratched it somehow but it has me worried.  Any advice would be gratefully appreciated.