So my GF and I have just recently started having sex, and it's great, but she is usually too sore for sex the next day. I last a long time and she is always pretty wet so the soreness isn't from friction. Rather, it is from her vagina stretching when we have sex. I am just under six inches in girth but she is rather tight. Have any of the women here experienced this pain from stretching and does it eventually go away? Any advice is welcomed. Thanks!