HELP what to do about my ankle?

Okay I rolled right my ankle a month ago and a few times since. It kind of hurts when I walk and it hurts when I play sports.
1. Should I get an ankle brace for playing sports? Like a hard active ankle one for my right ankle only when I play sports.
2. Should I get a soft one for just walking around? Or should I just put a tenser bandage on it or something? I go to a big school and it gets sore when I walk around. Should I get one?
3. I also have a slight knee problem on my right leg. What do I do about that?
4. I'm really embarrassed about all this. What will I tell my team when I need an ankle brace?
5. How long until it gets better? Or should I just wear an ankle brace for sports all the time and one for walking around until it feels better?
Thanks!