I just started on this yesterday. While it's working it does a great job, but it seems to wear off after about 3-4 hours. I'm only supposed to take 4mg every 6 hours as needed. Would it be ok if I took it after 4 hours? I could call my dr and ask but he takes sooo long to get back to me if it's not an emergency. I read online that some people take it every 4 hours so I assume it would be ok. How much and often do you ladies take yours? Thanks!