i am a student in college and currently don't have health insurance, and today morning, i woke up to a strange feeling in my feet. it turns out my feet were really swollen on the surface part and around the ankles. it does not hurt, but it feels strange and i can't move my feet much. i don't know what to do, and i'm really worried it's only going to get worse. what does it mean? how did it happen overnight? is there anything i can do for the time being?