I'm in alot of pain..what can i do?

Alright i'm on my period now. I'm having awful cramps! Nothing is helping midol, tylenol, advil, heating pads, exercis, eating bananas. The only thing that has helped is taking a bath but once i get out my cramps are like 5 times worst. I have ped out before becasue of thi, i just get so sweaty and then really cold. i really cannot deal with this anymore. My mom knows that i go through alot of pain and i have tried hinting towards starting me on birth control but she won't go for it. I would really like to go to the gyno and see what she has to say. How do i get my mom to go for this? Also what can i do for my cramps until i go to the doctor? They're so bad i can't sleep! Please help me