Swelling in my feet & ankles w/ bug bites on legs that itched a lot & after scratching I noticed the swelling. What can I do to get swelling down?

Control the itching. The body reacts to bites as an immune response. This reaction causes swelling. Controlling the itching will also help. Scratching makes them worse. One home remedy is to apply vinegar to the bites. This actually neutralizes the toxins causing the reaction. Rest the legs. Keep them elevated above heart level. Hose with at least 20 mm Hg compression up to the knee will also help.