Hazel,
Really up to you. During my last pregnancy, I was definitely getting more tired towards the end, but still manageble. My term ended middle of my last month, so I was looking forward to the two weeks break to rest and to prepare for the delivery. Who knows, my boy decided to come early. Ended up, I with only the weekend of rest (last day of work Friday, my water broke early Monday morning. I didn't even get to sleep in! lol)