I need help

Hi! So tomorrow is my 21st birthday so unfortunately my insurance runs out from under my parents. My doctor has pretty much told me to stop "over reacting" and that its "just my period" but the pain has been to the point where my eyes have rolled back and I've almost thrown up. How can I bring this up to a new doctor in a way they will understand I dont want medication I just want help. I'm terrified of the pain and even more so of the judgement. I've had a coworker call me names and tell me to stop being a whiny b*tch and either "shape up or ship the f*ck out". How can I just explain this to everyone? I just want help