Aiyoo do you know how long is your guppy pregnant? Having a gravid spot doesn't mean it's ready to deliver!!! If you haven't been keeping track your guppies pregnancies and deliveries so it's hard to say. So is your female's belly soo BIG like it's about to burst? Normally when the belly looks squarish it's almost about to deliver. But if it's stressed it'll delay the process.......