I was waiting for your reply.
I understand your concern.
I am very sorry for your symptoms.
The swelling of legs, ankles, feet is usually due to collection of fluid.
Typically it develops in these parts of the body due to gravity.
There are different causes of swollen feet and ankles.
It is unlikely from vaccine effects.
Prolonged standing can be a cause.
Other causes can be the diseases of the heart, kidney, liver.
Obstruction in the veins, venous insufficiency, clot can cause swelling.
Low blood protein can cause swelling too.
If the symptom continues, I would advise to take an examination by doctor.
A few tests would find out the precise cause.
Water pill or diuretic can be required.
Please keep the legs elevated while taking rest.
I hope this information will be helpful.
If you have any query, please feel free to ask.
Your satisfaction is my goal.