What is happening to me?

Hi, since about a week and a half ago, this began... i was sitting in a taxi and i had a neck pain. i thought it was normal neck pain and that it would go away. later that evening, the pain became so bad and it felt like a painful tightness in the left side of my upper neck - right below where my skull was... for days i would feel the pain radiate from this spot, until i went to the doctor and an Xray showed i had a 'spasm' where the c5 and c6 vertebra are (whatever that means)... but my pain seems to eminate from this spot... and even after he treated me with a combination of Paracetamol, Stemetil, Valium (at night) and 2 injections of Neuroben Forte (a nerve vitamin)....i am still having pain off and on eminating from this same spot... he recommended an MRI now...and i can TELL this isnt in my brain....its at the base of my skull on my upper left neck and it feels tight and painful there....out of frustruation ...yesterday i went to a pharmacist who gave me Mydocalm and Sirdalud for the night....and today i bought myself a neck brace and i am wearing it now. what do i do? im so frustrated...i have a job interview tomorrow and i am in this state and idk why.... Can Stress even cause this "Spasm"....? ...and should i have had this since Wednesday before last week....