ㅜㅜ It's weird in the back

On January 7th, I underwent cataract surgery in Apgujeong. In fact, it's not a small amount of money, it's a hard-earned operation, but I was really disappointed with this hospital's after-sales service. He is a famous director and the hospital is famous, so I paid a lot of money to do it. It's funny, the place with the slit in the back is weird ㅜㅜ I keep getting pus and it bursts and pus is forming .. I was worried and went to the hospital and the hospital doctor said there was no hole for the pus to come out of . He told me to eat because he would give me medicine in a way that bothered me with things that were not even work . I really didn't go to the hospital because I was in front of my house, so I made an appointment because I was worried. I'm really upset about that kind of behavior..Is the operation done right? It's scary .