@Alicerr I've had the bum pain and shooting down my thighs Dr friend said its baby pressing on the major nerves in your body. If you can get baby to shift then it generally goes away. Pregnancy sciatica is unfortunately another joyful thing though.
@fizzledays @emalady @MrsY87 thanks good to know I'm not the only crazy one for house works! We are on week 7 with another 3 to go. I know it will be worth it when done we had 3 different trades working around each other this week (7 workmen) it was a bit much and one of them didn't take his boots off so carried plaster dust upstairs 
Back down to 3 workman today so hopefully I can clean up a bit after the chaos!