Hey, MRSNOAHDRAKE !!
I too am in my late 40s and have been experiencing the glorious symptoms of peri-menopause. I know where you're coming from. While it would feel great to sleep through the next few days, believe me, getting some regular exercise will help you feel better.
When you exercise, you get your blood flowing, literally and figuratively. Exercise increasing the flow of menstrual blood. That helps reduce some of the cramping. So, go have a vigorous workout, it really will help.
And what are you doing for strength training ? One thing I've noticed is that my symptoms don't seem to be as bad as other women my age and I suspect it's because I strength train. Adding lean muscle helps when our estrogen levels are in free fall. The lean muscle helps to drive our metabolism. So, if you haven't been strength training, definitely consider adding it to your exercise routine.
The Daily Spark had a blog about women, strength training and menopause. You can read more here. www.dailyspark.com/blog.asp?post=menopause