What Causes Numbness In Arm While Having Prolapsed Disc In C6?

Hi, may I answer your health queries right now ? Please type your query here... I'm a 45 yr old female who has been diaognosed with a prolapsed disc in c6. im still a waiting surgery. I'll been in extreme pain for 7 weeks. and on occasion have been given for morphin as most pain killers wont work. im am now suffering with numbness in my left arm .should this sorted urgently