No that's pefectly normal. Once you suspect you might have the big C, you get all sorts of aches and pains. It's most likely because you are all tensed up stressing about it.
Exactly the same happened with me, and I convinced myself that my body was riddled with it. However, when they diagnosed it, it was confined to my left breast and the lymph nodes in my left armpit - nowhere else. I've since had chemo and a full mastectomy and axillary node clearance, and it's all gone. Just planning to have radiotherapy now, and then hormone treatment.
I know it's a difficult time, but please try and be positive. You'll find out soon enough whether or not it is anything to worry about, and if it is, they'll cure you like they cured me. I bet those other pains soon go away too! x