Stung on the foot by fire ant 3 days ago. entire foot and lower leg are swollen and painful. previous stings did not react like this. should i worry?

Possible Cellulitis: Any insect bite can turn into a bad case of skin infection (cellulitis). Have your foot examined by a physician for you may need an antibiotics.

Yes: You should, i would advise you to go straight to the emergency room. Sounds like you need to be put on antibiotics immediately and be evaluated further.

Get treatment: You can have cellulitis or acute allergic reaction. Please see your dr.

May have infection: Or a bad reaction. See a physician immediately.