OK this is a little weird for me so please be open minded about this, I have a 13 year old daughter and well I need to know the age that girls start have periods I'm her father and only parent and I just don't know these things about girls, and also she said that she wanted to know what sex felt like and that someone told her that it would hurt at 13 years old, but I told her that she shouldn't think about things like that that she should wait until she got married but still she asked and it deserves an answer so I kind of need a woman's advice on this because I'm clueless on either part, so please help, thanks