Two recommendations Venkat.
1) Get out of your church!
Don't wait, leave right away. Your religion is causing you problems.
Any faith that causes such distress and angst is not a faith that anyone should have. Either find meaning outside of religion, or find a religion that will support you as a human being. No one should have to be hurt by religion in this way.
2) There is nothing true about what you are saying about masturbation (and I can tell you from more than 30 years of experience).
3) If you are really having the symptoms you are describing... you may have a serious medical condition (completely unrelated to your religious beliefs). You should talk to a reputable doctor and figure out what is really going on.