Swelling Legs and foot? Again?

[Jomomo]

After being hospitalized for 10 days due to Warfarin overdose, I lost 50 lbs of fluid from my body. I am back on Elliquis, Lasix and Entresto and feeling good. I was so happy not to have the red swelling legs and feet. Suddenly, yesterday, I could feel my left leg itch, swelling in the foot, and redness. 2 weeks of no symptoms, then here we go again. There are no blockages in my leg, I've had every test in the book. Why would it start back up again? I don't get it.