This may be cellulitis. In which case you may need hospitalization and intravenous antibiotics.
Another possibility is Hansen's disease in reaction, as you said there's numbness. There are other differentials too. More information is needed.
Next Steps
A thorough evaluation is warranted at the earliest.
Health Tips
Keep the legs raised on 2 pillows while lying down. Keep them raised on a stool while sitting.
Consult online for detailed guidance.