Pregnant and pet boarding

Hi ladies im 35 weeks pregnant and have booked my 2 rabbits and 2 Guinea pigs in for boarding when i will be about 39 weeks. However im worried that i may give birth earlier or labour will start earlier than that and am not sure whether i should move my boarding date to an earlier date to accomodate if i go into labour. Do you think it would be better to board the pets from 37 weeks onwards just incase?