Swelling Natal cleft area. Wrote - do?

Hi Doctors, I have swelling on Natal cleft area left side. I have been to a dermatologist on 6/12/17 And he wrote - Do? Swelling - Natal cleft area O/E - Minimal soft tissue thickening on Left side of upper Natal cleft - Non tender Rx- Patient reassured Hot formentation. I didn't do hot formentation so far and after that I saw the same doctor after 3 minths and he said that swelling has reduced and I didn't bother much about that. Now when I check after 2.6 years still that swelling or thickening is still there..it's hard. Swelling size is like one marbles / Goli ( we use to play game) not e When I keep press many times it becomes big again it shrink after sometime and also minimal fluid discharge while pressing many times. No pain untill I press many times. Is this something cancerous as one of my friends is died due to soft tissue sarcoma.im bit worries when I think and that swelling is not bothering me untill unless I think. I'm obese. Can u pls suggest what needs to be done next