SHould I be worried that I've had pain in my neck and shoulders for a week now?!

SHould I be worried that I've had pain in my neck and shoulders for a week now?

It seems to be moving slowly down my arms and is like a throbbing pain. It started as a stiff neck 5 days ago and now it's right down to almost my elbows and right through my back and shoulders. My head and jaw is also sore. I havn't had any recent injuries and I'm worried! My doctor is on holidays and I wonder if this could be something serious I should go to the hospital for?

2 weeks ago
I'm 24 and I also feel kinda numb and tingley, muscle relaxants worked only for about 20 minutes and emotional stress seems to make it worse. When my boyfriend tried to massage it (I was laying on my stomach) I got small chest pains over my left breast and felt like I HAD to stretch. The main source of the pain is just wear my shoulder meets the neck on the left side and is throbbing up the left side to the bottom of my ear.

i don't want to alarm you but yea if i were you i would go to the hospital and have an ultrasound done to see if it could be a blood clot and those are very serious..have you tried going to webmd.com and typing in your symptoms sometimes they can give you a better answer than just anyone of what it might be..that's what i always do when i have a strange pain or weird rash or something that my doctor my not see me right away for...at least if you go to the hospital they should be able to get your pain under control for the moment...and being comfortable is the most important thing...