[MWF]

You sound like an Indian girl version of high school me; what you wrote was the same thing I would've written myself. What I would tell you, though, is that you shouldnt automatically close yourself off from people. If your teachers want to help, and if you think they can keep a secret, I'd say give it a shot and tell them how you feel. You don't have to tell them everything. I confided in one of my teachers in high school and she became more motherly to me than my own mother, it was great.
To me, it sounds like you need some support. I think you should take it.