With dc1 I sat at 39 weeks pregnant and scrubbed every cupboard in the kitchen, lined all the food up alphabetically and scrubbed the floor with a nail brush! Dh thought it was hilarious and I couldn't see anything unusual about my behaviour! Ds came 5 days later.
Dh says I been the same this weekend, (38 weeks pregnant) getting really agitated if the slightest thing is out of place and I apparently have vacuumed and dusted babies room 8 times! I wasn't counting and again hadn't really noticed the unusual behaviour, just kept thinking it needed doing!!
Love the fact our natural primal instincts still play through!