Keep an eye on your hot and cold feeling, make sure you are not getting a temp. Call you hospital if you are.
Good luck.
Thanks for your support everyone. Rumpleteaser, I got a bit worried about this last night and took my temp. It was 36.7 so I was reassured after that. Had a better night but woke at 12, 2, 3 & 5 - each time with strong BH. At 5am I took some panadol and got back to sleep until 9am. Today things have quietened down and I have had more bursts of energy that have driven me into the garden to weed and cleaning down windows and shutters! The things we do when the nesting urge kicks in...

Off to the Ob tomorrow afternoon. In the meantime, enjoying the Sydney sunshine and time with DH before we are 3!