My 11yr Old Daughter Was Complaining Of Foot Pain (

My 11yr old daughter was complaining of foot pain ( both feet) for a about a week and 3 days ago she started to hurt so bad she can't walk and can't stand anything to touch her feet. The are swollen and red this is an all day problem increasing throughout the day. We've seen 3 doctors in 3 days and nobody has a clue