I Had Varicose Vein Surgery In September Where They Removed

I had varicose vein surgery in September where they removed a vein in my right leg they did 4 incision starting at my foot all the way up my leg cause I didn't have good blood flow on the incision midway up my leg now it been giving me problems all along but my dr said it was fine not even checking it's very swollen today hot and red and very painful what could this be since is on the inside of my leg I can't help but to move it please help me out here thank you