As long as they're still having a strong heartbeat from the baby, it's probably just one of the side effects of the strains of carrying a child. We had stuff like that go on with ours. My wife also had about two weeks of phantom off-and-on labor pains with our second.
Wanted me to stop cleaning the squirrels I'd just brought home and take her to the hospital. I didn't see the rush. I mean, she didn't give birth until 20 hours later!
The update is wait until morning and do same tests... major problem is fluid sack is very small and they pumping fluids to help out... we will hopefully know something in morning ... either have a baby or she stays in the bed is what i see