Every time I drank water, I felt like phlegm was boiling, but I didn't force myself to collect the phlegm and spit it out. I felt like I was going to sneeze, so I held it in for a long time and sneezed weakly, like I was coughing, and suddenly a handful of bloody phlegm came out of my mouth.. literally a handful. Is it okay..? Because I have a functional nose, I get a lot of nosebleeds.