Karen, you didn't say how long you've been riding. But you did post in the "New Riders" category.... I think if you're newly on a bike you might be sore in all KINDS of ways- arms, legs, butt, shoulders, hands, etc. I know when I started biking again a few weeks ago, my butt bones really hurt for a few days, as well as my wrists, palms, my knees, my thighs and my shoulders. Now, all those aches are pretty much gone and I think I'm building up more muscles.
Is this a new bike for you, or new handlebars?