i took 2 of them last night, they are a muscle relaxant with the main drug Methocarbamol. so i took 1500 mg cuz i haven't been able to sleep lately. been staying awake until 5am. so i took it last night and now i feel really lousy and my jaw and some other joints just feel sore. at school, i took them off and on to fall asleep, but never had these problems. could it be the heat along with the Methocarbamol?