Why is it some women have a stronger period than other women?? An ex of mine used to become horny when it was her time of the month. Once we even had sex while she was having her period because she was so horny. My current girlfriend has serious cramps leading up to her period and then her period lasts 7-10 days and she wants very little contact. Basically rubbing her arm or head is all about she enjoys during this time. She also gets very irritatable(sp?). Her breasts also become sore. Last month, she became very ill, even throwing up. She also tells me she is a bitch and quite mean at work. lol Her room mate also has severe PMS times...Her room mate gets real bad that she does not want anyone touching her. Also many of the women I work with tend to have very bad times during their own time of the month....Some have very bad cramps, others get very ill. The whole Premenstrual syndrome is a mystery to me...but one I would like to know more about.