I think some mental issue. Please help.

Sir i have a problem of repeating things like keeping something at the same place many times. I also have a problem of swallowing my spit in a regular pattern and i keep on repeating it and dont want to do it but cant help.i also feel very nervous during presentation or speaking in public, in exams and keep on swallowing my spit in same pattern .due to all this i sweat from my palm and feet(hyperhydrosis).i also keep on asking the same thing many times and also repeat it in private many a times.due to all these habits i become frustrated and my ear sometimes red and my palm and feet sweat more and my self confidence has come down.i also sometimes read the same line many times and i think my bp becomes high due to all this.sir please help.