Water Reduction Wraps Safe?

I retain water A LOT of water on and around my knees. When I’d swell up during my period I’d lotion my legs & wrap them in Saran Wrap before running. It really helped me sweat out some water right on my knees & I’d feel instantly better. Now I’m 6 weeks pregnant and have big swollen knees. Can I still do this if I stay well hydrated? I need relief!