You should not produce anything until after the birth. Sometimes it can leak beforehands but most often it does not. Don't worry: your boobs will be ready as soon as soon you breastfeed your newborn.
Yeah...2-3 days after baby is born it will happen...
Totally agree with summero87....it probably won't happen until you're back home from the hospital; and believe me, you will know when it happens, as you breasts will get very full and heavy! Good luck with everything! You're almost there!
You won't get your actual milk until a couple days after the baby is born..you will have colostrum until then .Congrats on baby too :)