I have my second chiropractor appt. tomorrow. I'm 13 weeks with twins. I cannot wait! My first one was amazing. He said my hips weren't even and did this rocking thing to them and popped my back and neck. I felt great! I get low back pain at night and it went away for a few days, but has returned the last two nights. So I'm ready for my next adjustment. 
PS to the ladies wondering. It is safe for pregnancy. It is even recommended! It can help get your hips and spine aligned for a shorter more productive labor. I plan to go every week.
This woman describes what made her labor easier and talks about the chiropractor. 
My chiropractor works with a lot of pregnant women which is why I chose him.