
others with more experience will be along soon no doubt,but i think you'll get the same ISH response and if it were me id say no not yet hold fire.
she may not have taken on the first mating so really she may still have a little longer to go.PLUS they dont always whelp on the day.some before mostly after or around.id not leave her alone for too long though as it may start at any time from now so be aware and keep your eyes peeled.
if it were me i wouldnt be leaving it any longer than the day day 63 after her last mating if you know what i mean.if your really anious you can take her to the vets but id say wait a bit longer.
good luck and keep us posted.
as i say someone eles will be able to give you a better answer than me.