OK, so I'm having extreme pain in my back, and I feel like I'm going to start my period, followed by…

OK, so I'm having extreme pain in my back, and I feel like I'm going to start my period, followed by a migraine. I can't get ahold of my doctor, and the nearest er is an hour away and I'm not able to drive with a migraine. and the EMTs won't take me nervous they don't see it live threatening... what should i do??