I Am 41 Yr Old Asian Male & Had CO2 Treatment 1 Month Ago to Remove Sunspot, but Now Have Hyperpigmentation. Will It Go Away?

I had an aquaintance who was a Dr. He said he could get rid of my sunspot using IPL. After 5 treatments nothing happened so I called him and he said come on in and he'll fix it. Not knowing what he was going to do I didnt research it. Well he used a CO2 laser "on setting 2". 1 month later and it is darker than the original spot but in the shape of the proceedure. Will this go way and if not, can I get rid of it? He didnt give me any cream. What should I use? He is an idiot!