Cenara Blackheart
Are you using your diaphragm?? Also, generous amounts of tea and honey might help gradually improve your voice here and there.
I tend to like gritty voices though. :v
Sorry, I have to correct.
You don't "use" your diaphragm. It is an involuntary muscle that helps propel air in and out of your lungs. When people say "use your diaphragm" what they really mean is move your air, or support with your more air. Your diaphragm does help with this, but you can't control it. Thinking you can control it by flexing your abdomen to help push the air out only cause tension. Tension is very very bad, you want to be as relaxed as possible. Continueing on air, you want to use more of the upper part of your lungs. It may be the opposite of what high school band and choir teachers have told you, but I can assure you they only say to use the lower part of your lungs because it helps everyone understand what they are saying. Your lungs are in the upper half of your torso, so take in the air and expand from your chest and back (when your take a good breath into the chest, your back should also expand because your lungs, when expanding properly, pushes from every angle of your upper torso), and breath naturally with tittle to no tension.
And the tea and honey thing is great for when your sick with a sore throat. If you aren't sick all you are doing is drinking tea and honey. there are no benefits to it other than that.
Now this "problem" with your voice is not a problem. There is always an awkward time in everybody's life where your singing voice is going to be terrible. This is because as your body changes so does your voice. In fact, your voice changes until your about 35. There is nothing wrong with your voice it is just in the middle of an awkward period.
With that being said, it is very important not to strain your voice at this time. Over use of your vocal chords can cause serious and permanent damage. If it sounds like there is strain in your voice when trying to sing high, then don't sing high. If you are in choir and are singing soprano, ask your director to move you down to Alto.