Nepramel 40mg (Esomeprazole) anyone experience side effects with this?

[kissmelittleass]

First of all I'm asking advice on here as I can't see my G.P. until next Thursday so in the meantime I'm interested to know if anyone has suffered similar with this drug.
Small bit of background info..I was put on the above by my G.P. 6 weeks ago until I get seen at the hospital for an endoscopy this could mean taking this drug daily for another 3-4 months or more. I have very bad acid reflux with acid coming up at night causing my throat to be infamed. I have seen some improvement whilst taking Nepramel but have what I think now are side effects to this drug.
Two weeks after starting the drug (so for 4 weeks now) I started to get a strong ache along the length of my right arm between the elbow and wrist. First of all I thought I must of sprained it somehow but then it progressed to even lifting anything with my right hand with a little bit of weight would cause a strong achy pain similar to a toothache is the best way I can describe it! Then shortly after I started to get an achy pain around my right knee which really hurts if I bear weight on it, this has also started on the left knee and left wrist arm elbow area but much milder on the left side. My joints also seem to be clicking a lot for some reason?
A few days ago I started to experience quick burny stabbing pains around the right elbow and a stronger toothachy pain along that area of arm to the wrist. Today the back of my arm is achy as I type this with little stabbing pains now starting on my right shoulder.
I think this has been caused by this drug and think I should stop taking it until can I can see the doctor next week. Any advice or experiences with this drug anyone?