(Concern) I'm worried because I have a lot of phlegm due to post-cold complications.

Last month, I really caught a terribly severe cold.

I caught a cold and thought I would recover within ten days as usual, but it didn't happenㅠㅜ.

Wow, it lasted for about three weeks. I think I took medication and received about three injections at the hospital.

I thought I was getting a little better, but the phlegm never goes away.

Every morning I feel like I have phlegm and cough, and I wish I could clear it out easily, but it doesn't come out.

I absolutely cannot cough up phlegmㅠㅠ It's so frustrating.. How can I expel the phlegm??

I'm drinking a lot of warm water, but I don't feel like I'm getting any betterㅠㅠ..

I want to completely get rid of phlegm.. After catching a cold once, I wonder what kind of suffering this is.

Are there any tips to get rid of phlegm??