Hi I ve been clean off crystal meth for about a month now. My throat feels like it s building up mucus or what initially I thought was the drug its self. Now I think that I have like a really bad sinus infection or something because I gag mucus in which causes it to go through my sinus cavity into my nose. It seems like it will never end. I need advice on how to clear my throat and sinus cavity of all this mucus build up. I don t know where else to turn. Thank you, and happy belated easter.