Alesusy it sounds rather like you're describing my glutenings! Just feels like everything is locking up. I also get jaw pain - I tend to grind my teeth in my sleep when I'm stressed and I think this is the same thing. I'm planning to get fitted with a night time gum guard (attractive! Haha) when I can afford it, my mum finds them really useful.
I'll consider the drugs too, especially when I'm working full time next year. And I'll tell my boyfriend that massages are a medical necessity! Hehe. Thanks.