It sort of goes every other month for me. Yea I'm weird. One month I'm insatiable the few days before, then the next month I'm insatiable during my period. I usually only do not want it at all when I'm sick from my period. (About 2-3 times a year.)
It's normal. Something to do with the flucuation of hormones. I get the same way the week I take my NuvaRing out and have a period...althought I haven't had my period in like 3 months, which is normal for me.
I really don't notice a difference, but I'm insatiable the entire month. I can usually tell when my body's in "babymakin' mode" (as my significant other calls it) because I'm even more insatiable. Well, and the whole looking at platinum baby rattles at Tiffany & Co...
I tend to get horny right before, and during my period. Yes. I think it has something to do with all those extra hormones. My guy also starts hitting on me a lot more around that time, before he even realizes I've started! It's probably a pheromone thing.
Too much of the time, I am insatiable but right before my period, even more so. During my period I am horny and I discovered that sex, either masturbation or intercourse relieves my cramps and gets the period moving quicker.