Please Am John I Have Health Related Issues When I

please am John i have health related issues when i was 14 years my friend introduce me to masturbation and i did that without knowing the precaution now the side effect is disturbing me. am just 27years now, my hands always shake when am holding anything, whenever i have sex i release very fast then headache will start. and i cant sex more than a round, also i cant add weight no matter what i eat. what can in do?