I feel physically old and I'm only 17

Other conditions
1

So, my muscles hurt, I have a really persistent pain in my right hip (but my left side is alright), I have lots of back muscular pain, and it never seems to go away. The hip pain started about two weeks ago and although it's tolerable I have no idea what to do to make it go away.

I used to play basketball and still had pain (muscular problems in my back and arms, hands and elbows), it's been getting worse for the last two years or so. Now I'm not as active as I was then (quit last year), but I'm not tooo lazy and I eat well (I'm a vegetarian with a healthy diet). I've tried swimming but I'm not sure it will help, what do you think?

Other problems include air hunger (it started some 6 months ago but now it's not a big problem as it was then) and accelerated heart rate. This last problem started to bother me after a particularly bad hangover, it scared me so much I stopped drinking for good. And yet I still get it sometimes and it frightens me, even though my exams all say I'm healthy and it's probably just anxiety.

What do you think is my main problem and what could I do to fix it?

Could my pain be caused by bad posture (I'm very tall)?

Could swimming make a significative difference?

Is it normal to feel like this at my age?

Any other tips will be welcome, it's my first time posting so please help me.

Thanks!

2

Yes,I think this could be related to the fact that you are tall and you are just 17. Your muscles grow at a different rate to your bones and this used to be called "growing pains", Your bones and muscles have not yet settled down,and this often causes weird aches.   Steady regular  swimming is excellent as it stretches those muscles.

Air hunger,which can cause an accelerated heart rate may mean you are suffering some small stress/anxiety as well...also common at your age.  As you are tall make sure you always stand up straight as much as possible and dont try to look smaller...al those supermodels are tall!!!

As a vegetarian make sure you have adequate iron in your diet or you may need an iron supplement. 

Be assured that this will all pass.

3

Have you had your vitamin D levels checked? You may be deficient.

4

Yes! I did have slightly below average levels of vitamin D last time I checked. What is its effect in my health?

5

Possible effects can be :-

difficulty thinking clearly.

bone and back pain.

possible bone fractures.

muscle weakness.

soft bones that may result in deformities if very low vit D 

fatigue and tiredness

depression