Recovering from cold SO much phlegm

I do not know what to do. I’m almost fully recovered from my cold but I haven’t been blowing my nose and I think all this phlegm is being kept in my throat. It’s like clear, thick, and sticky! It’s like glue. It’s really frustrating because I can’t cough it all up at once it comes out like stringy and you have to like keep pulling it out. SO gross. Same consistency for my snot. Occasionally throughout the day I blow my nose and it’s equally as frustrating. Can never get it out. I spent 5 minutes over the sink trying to spit it out this huge clot of phlegm I felt in my throat but it wouldn’t budge. Someone please help me.