That must be it @chesceleste because at my last ultrasound they said baby is seeming to stay quite low like right at my public bone. The Dr said the baby has enough room to move up but hasn't. my one other pregnancy my baby boy as the Dr stated I was carrying dangerously low with him and man I remember that I could barely close my legs together to either sleep or walk it started around 6 and half months to 7. I'm hoping baby moves up a bit but so far doesn't seem like it.

I had bad back pain when I was pregnant with my twins. It's either your sciatic nerve or your body could be stating to make room for your baby which is putting stain on your back. Good luck!

I didn't know it could happen this early I'm going to be 14 weeks and haven't gain any weight yet except maybe 2 lbs

@caisner, I had that pain with my last son and this time. My doctor said it was sciatic nerve pain caused by the position of the baby and weight gain.

Never had it like this before

sounds like sciatic nerve pain to me, I have the same problem and was told by my OB that that was most likely what it is.