Make sure to get checked for DVT and superficial thrombosis in a large vein. Back in 2019 I had a superficial clot in my greater saphenous vein that went from my ankle almost to my groin.
Once you get your swelling issue sussed out, get some compression socks and wear them regularly. Elevate your feet at least 6" above your heart on a regular basis as well, you'll notice some relief.