Hello, So I Have Been Having Leg And Feet Tightening

Hello, So I have been having leg and feet tightening and and swelling all of a sudden. Seems related to foods, but I can't quite pin point what foods. I have been on a strict diet mainly eating lean meats and veggies and I am on a parasite cleanse. I don't seem to ever lose any weight on this new diet I have been on for nearly 2 months and I all of a sudden developed this leg and feet swelling issue. I am fairly active but always battled my weight all my life. I am 48 years old