Hello, my daughter (18mon) had sudden weakness (and maybe pain?) in her left leg today at daycare. Her teacher said she fell while trying to walk several times. They called me right away and by the time I got there, she was walking fine. It lasted for about 30 min. I called our family ped who recommended that we visit the Childrens ER just to be safe. They did an xray, said there is no injury (fracture etc), which we knew, and then sent us home. I'm still worried. Next steps?