I've had braces for almost 4 years with only a few months left. But about 2 months ago I got very sick, ended up in the hospital for about a month on all kinds of medication and when I got out I noticed a lot of white spots on my teeth near the gunline. When brushing chunks of tooth have come out leaving quite a few holes in my teeth.What is going to happen/or needs to be done? There are more weak spots that I'm afraid are going to break out if I brush too hard