Hi I am new - and very worried.

I was wondering if anybody has ever worried about these illnesses and then got over it?? I cant imagine ever being free of these thoughts - did anyone get over it without the need for MRIs etc or is it something you have get checked out and then told you dont have in order to feel free of it? I dont want to go to the doctors in case they take me seriously - I dont think I could take it!! I just keep buzzing inside every now and then and my arm gets numb and feels tingly and my left eye seems to be blurred - sometimes I even think my hand is stiff and I cant use it - I am not sure if it's real or in my head! I twitch all over too - am I just burying my head in the sand??