(((((Wrb))))) ow, hope the aches ease up soon. I'm sure the little bean is fine, but I'm also sure your mw wouldn't mind at all referring you for an early scan. My mw always said they prefer mums to be paranoid than blase.
I fell half way down the stairs when I was about 20 weeks pregnant with M. just kind iof slid down on my bum but all the overcompensation pulled something in my back and chest. Mw wasn't concerned about baby though, they're very well protected, esp when so teeny.
Oh, and CONGRATULATIONS!!!!!! must have missed your announcement.