my pregnant cats belly has dropped

my cat sasha was due last wed (So we thought) but spoke to the vet today and she thinks our dates were out as my neighbours heard her with males a couple of times in that week that she escaped. vet said she should be due in next couple of days, but today her belly dropped drastically! she was very round this morning but now her belly is hanging low and doesnt feel like she has swallowed a football at sides anymore. i was wondering how long do you think it will be untill kittens arrive?

Being cats, it's not possible to say for sure.  They haven't read the books so they do what they want, when they want.  I suspect 'soon' is the best anyone can do.

thanks yea i know nobody can tell for sure, was just wondering in other peoples experiences how long did it take their cats to go into labour roughly.