I can usually avoid the hypo's as I know to adjust my dose and keep a closer eye on my bg, but I need way less insulin than usually, starting a day or two before my period and going back to normal after 3 to 4 days. I was just last week wondering if birth control would help with this.
I use the FreeStyle Libre, which makes it a lot easier to spot changes before going high or low, which is a great help.