Congrats on the girl, Hoping.
I've been having back/butt pain too. Hopefully it means I'm still pg though. Still not finding the hb on Doppler yet. :/
In terms of names, we haven't officially discussed much. I did a SneakPeek test and just sent it off yesterday, so now we just gotta wait for the result (and probably take it with a grain of salt). Some of the runner up names for DS were Matthew, Auston, and Liam (William). Of those, Matthew would be my first choice with one of his middle names being Werner (my late dad). For a girl, I've always wanted Emma, but SO doesn't like it; he thinks it's an old name. He said the closest he'd be ok with is Emily and he'd call her Lee for short. So, I'm gonna counter offer with Emmalee, so we can each call her what we want. And for middle names I'd want Lynn (my mom's middle name) and Morgen (the German word for morning).