Girl7000
There’s nothing disgusting about your pain or the reason for it, you don’t need to apologize for mentioning it, it’s something you have no control over. In the U.S. you need a prescription to buy a tens unit. There are some units sold without a prescription but they are less powerful than the prescription units. They both involve electrical boxes, wires, electrodes…you can get pretty kinky with it you want.
There’s another choice. Tens units are widely used in Asia, where they call it an Electro-Acupuncture Instrument. I have a really nice unit I got there called a Stimplus Pro (the “Stim” part says YES!!). It’s a hand held unit with a probe you apply to the affected area. It comes with a little book depicting where to apply it for various aliments (including menstrual cramps). It works great. I’ve used it on sprains, pulled muscles and general aches. Once while at sea I had an awful toothache but couldn’t take codine for fear it would impair my judgment. I suffered for some time until I remembered I had the unit. In desperation I place the probe of the unit on my gum opposite the bad tooth and fired it. All pain was gone immediately. The girl crewmembers have reported benefits from it when they had cramps, but I’m unsure what other measures they took. I do know that most bought their own units afterwards. They got them here: http://www.bodyclock.net/acatalog/Stimplus_Pro.html (this outfit ships to the U.S.).