I wouldn't waste any sleep over this. As a guy who has been told many times by women, "You've got the biggest cock I've ever had/seen.", etc. (I've heard it all...)
As far as meaningful, significant relationships, women, ultimately, do not care about penis size, they'd much rather have a guy with a great car, great abs, great personality, someone who's going to go hiking with them, take them to a farmer's market, etc.
I've had many women tell me it's the best sex she's ever had, but our relationships never lasts. They ultimately want to be with a guy who's going to give them more than a big cock.
Honestly, guys care more about size than women do. I think if it were represented on a pie chart of what women want in a man, a huge penis would be 5% if at all, in the whole scheme of things.