TMI:Horrible sandy / stringy discharge before period

Tina

I’m desperate and I’m looking for your help, ladies. No doctor’s been helpful in any way. 2.5 years ago I started having this horrible discharge 3-4 days before period starts. It’s clotty, stringy and with pieces of tissue that I find in the toilet when I go pee. My pap smear is clear. They’ve never watched me on ultrasound whatsoever. Do you have any idea what could be causing it? I also struggle with over-sweating and cold feet during the same time but it could be unrelated