Hi @Shan_07 I had similar treatment to you (without the Zolodex) and started on Letrozole (for 6 weeks) before going to Exemestane (for 6 months) and I had general aches & pains in most of my joints - specifically hands, hips & knees ..... now on Arimidex & happy with it so far (5+ months.)
To be honest, if you are concerned about the pain & have had the it for a while (2-3 weeks or more) I'd be asking your Onc about it.
My mantra - If In Doubt, Get Checked Out (just for your peace of mind as much as anything!) Guaranteed, the day before your appointment - the pain will disappear!! grrr
All the best xx