Please help me its my life problem!?

hi guys i am 15 years old boy well i have this thing in my life every problem which doesn't even exist or exist i make it so important that it contains me how? well when i was 13 and i had a headache it lasted for like 3 month i refused to go to a doctor i got paranoid and panicked really hard every sec in the 3 month at last i got to the doctor and he made an xray on some thing in my face called nose bags i think and it had a virus it was a very silly one but needed treatment i felt good in no time now from a week i had my first shaving blade experience i went to my haircutter told him to shave with the blade well i didn't see it he got new one but i kinda saw him but it underwater anyway he shaved every thing went good my father told me u have to be carefull cause if its used and ur hurt u can get aids then i was panicked i made him check the places where he used it he said u didn't get hurt its all ok just be careful next time he said that he knows the guy that shaved for me and he always uses fresh new blade but i was so worried i got to the haircutter asked him about it he said we don't use used blades cuz it transfer aids...etc anyway no visible hurts not even a drop of blood and my parents gaurantee still i am very stressed and worried i didn't sleep and today i sleepwalked to my paernts room till they were scared..they talked to me about it and i said ok its nothing i felt good after that but whenever i think about it i can't stop >?< please help me i need a solution for this over-panicking sitiuation and please tell me do u think that i am over scared i mean does this whole shaving blade and aids experience is nothing? i live in Uae its a very clean place