Ear Block , loss of hearing. Surgery?

There was blood like something came out 20 days back....I though it's normal and it's due to use of earbuds. But after 7-8 days I feel like my left ear is blocked and some continues soundstage​ in ear. I went to a Dr. She checked and said something is there in ear but not sure so given medicine for 1week saying this may be due to cold I took medicine for 1week but no doesn't help. After that I went to some other ENT doctor he says it's due to SARDI(cold) which is behind the eardrum hence it's blocked my ear. He suggested me to go for small surgery in which he will make cut on drum to bring out the sardi from ear. I requested for medicine so he gave 1 week medicine...Now it's 3 days but I don't feel any relax.....Sounds still come and left ear is blocked.......Please help me on this ? What do you suggest ? Do I need to go for Surgery ?