im a pretty big guy, 6'8 and about 340lb, and a have some fat around my pubic area that makes my penis seem smaller than it is and i was wondering if that was a turn off for a woman.
Wondering whether part of your body is a turn-off "for women" is not healthy. The fact that you're asking the question indicates that you're not comfortable with yourself. Do something about that; either find a way to accept yourself for who you are or change to who you want to be. Once you're happy about yourself, you'll stop worrying what women think. Most women will accept you for who you are if you're happy with yourself.