If I am on the home path and need a 3 to get into home, can I get in if I roll double 3's? This was my last pawn. We weren't sure if I was the winner or not.
Yes (in most rules; check your specific rules for exceptions). From Wiki
Pieces may only be moved to the home position with an exact application of the total roll, the value on a single die, or the complete application of a reward.
You cannot voluntarily forfeit a roll, but you can take part of the roll if that is your only option.
All die rolls must be taken and may not be voluntarily forfeited by a player.
If either of two rolls must be forfeited, the player must forfeit the lower number.