Sorry this got buried in my emails!
Yes, I am an internist with an aesthetic practice. I use Laser Genesis
This should be a very comfortable procedure in the hands of a knowledgeable operator. while you will feel your skin get warm, there should be no pain. Either too high a setting or distance to skin was too close (2 cm is recommended)
Your treatments were spaced way too close together. It is best to wait at least 2 weeks, better 4.