Hot bath, hot curry, hot *** (thats how you got to this state in the first place)! A nice long walk, but then in this weather and depending upon what part of the Uk you reside in you may have to resort to walking up and down the stairs. Keep your back straight, legs apart and walk up as if your feet have to touch the side of the stairs where it reaches the wall. This encourages everything to naturally move downwards....
Wishing you all the very best as you welcome your little bundle into the world.