Sending baby dust your way (:
The egg is only viable for 24 hours there is a possibility however it is just better to have sex before ovulation so the sperm has a better chance of reaching the egg on time. If your TTC try the every other day method this helps so that it doesn't deplete the sperm count.
Yes. I got pregnant a week before my ovulation date. You can get pregnant any day of the month; its just up to your body to take it in.