Yes, but that doesn't always mean the other snail is female. I've had snail on snail action with both partners being male snails.
They probably lay eggs shortly after mating, but are they fertilized? That's the question! It could take 5 weeks to know the answer. If it's humid enough in the waterless space of the tank, assuming you have a lid, that's the ideal hatching condition. What else is in that aquarium? Or are you removing it to hatch separately?yup that's def. a clutch. maybe they mated other times, or it really is that quick.
Must be something in the water lolWalk into my room and bam, two different snails