Hi, I’ve Been Having This Anal/rectal Fluid Discharge From Chronically

Hi, I’ve been having this anal/rectal fluid discharge from chronically smoking meth for around 3-5 days I think since the fluid started coming out. And this discharge making me nuts cause I can’t sleep or anything. I’m a straight guy and no one or no meth or nothing has ever been inside my ass like ever. No gays, no man to man or whatever that is. The it had been 8days since the last time I had sex with my girlfriend or any girl. I only have one girl, I’m her first sex. No guys or gays.

Anyway this fluid has been leaking randomly especially when I’m about to sleep. It stinks so bad, it’s uncontrollable, and stopped smoking it and started taking fiber and other vitamins.

What is this?
What caused this? And why?
What is the solution for this?
How long do I have to endure this?
Please help me