Zoladex and instant joint pain

Hi
I have just had my first Zoladex implant injected a couple of weeks ago, which I am having administered on a monthly basis. Within 2 weeks of having the implant I have terrible joint pain and my neck is stiff. I already have arthritis in my neck. Has anyone else had such a quick negative response to Zoladex and does this ease with time?

I also forgot to say that I also have Tinnitus since starting the Zoladex!