Are things about to start going really wrong?

I booked an appointment with my doctor yesterday. My knee has decided that it wants to start swelling and give me pain again so I have to go and be referred to a specialised knee or sports injury clinic. When I last went, I had an x-ray and it showed that I have fluid around my bone and that's what causes the swelling so they gave me a splint and I walked on crutches for 3 days and it helped. I think I need to have an operation on it and this is making me feel really nervous. I'm not with hospitals at all, they just remind me of when I saw my grandad alive for the last time :( I'm no good with needles either so ok really anxious about having a needle thing stuck in my hand. The things that's worrying me the most is the recovery time I need. I can't afford to miss any time off of school and there's no way I can walk around campus on crutches with my portfolio work. It also worries me because I don't wanna be in crutches for my birthday, it'll just completely ruin the party and I'm looking forward to it so badly. So what else is going on? I think I'm getting new glasses because my eyesight has gone so bad and I think I'll need a pair which I'll have to wear all of the time which I'm pretty okay with because I like wearing my glasses now :) and I've been getting back pain that I had when I was in my early teens and I'm worried that my scoliosis is starting to get bad again. That means more visits to hospital and possibly a pretty serious operation on my spine. Things have been really good lately and I'm worried it's all gonna go downhill from here. It's gonna bea tough few weeks so I'll keep posted with what's going on. Peace out guys :)