How can I fix my curvaceous spine?

I have had a curvaceous spine for about 4 years and it's starting to really hurt again. When I first found out that I had a curvaceous spine I went to physio every fortnight but it didn't work so I stopped going. But now my backs starting to get really bad again so is there any exercises I can do to straighten it out or am I going to need surgery? I'm 16 btw.