Well you have options.
If it is about to happen then if you are relaxed then it is likely to take it course.
Go to bed and to try to sleep.
Get out the clary sage and get a lovely massage from dp.
Continue bouncing and chatting.
Go for a midnight walk.
Have sex
It could be a warm up, either way, you'll be having this baby soon, really soon, so it is okay if it isn't actually tonight