I have a 3 year old blue Persian female. She is pregnant with her first litter and I am afraid she is overdue. Her mating lasted from March 22 till March 25. I calculated her gestation period as of her first mating date. She is eating normally, playing as usual - showing no sign of distress whatsoever. There is still no sign of milky discharge though her nipples are full. Two days ago she had a bit of mucus-like bloody discharge on her stool, but nothing since. I have three questions:

First, is there a chance that I miscalculated her gestation period due to difference between mating and conception time?

Second, Is this a sign of birth difficulty (am taking her to her vet tomorrow but I just need to know the opinion of someone who has had a similar experience).

Third, is it a good idea to have the vet induce labor with a hormone injection?

Thanks a million