I have had a cold with lots of liquidy mucus for 10 days now. It feels like a neverending stream of mucus clear and sometimes yellow/ green.?

Viral -->> bacterial. It seems like you had a viral infection and then eventually went on to get a bacterial one. Please visit your physician so they can prescribe the proper medication to take care of it.
Tis the season! This time of year a runny nose and cough are common, but if it is persisting over 10 days you should touch base with your doctor. I am a big believer in saline rinses to the nose, humidified air overnight, and lots of water to drink. All this helps clear the mucus. Antibiotics might help if it is a bacterial sinus infection, but often it is not bacterial. No otc meds are recommended.