Help ?? Herpes

Ok so I was told by a doctor that I had herpes type 1 & 2 but I think that test was wrong because I have no symptoms at all & I recently used my fathers shaver to shave my private part & I rinse it off with alcohol after I was finish now a week after my father shaved with it and now he have a cold sore on his chin could it had been from me? I'm so worried.