Suggest Treatment For Menstrual Cramps And Vomiting

Hi, maI'm suppose to get my period in 3 days, but have been having severe cramping for the last 6. I feel them all day long, and have been taking tylenol, midol, and ibuprofen to try and help with the pain, but they aren't working very well. I have been waking up at around 3 a.m. every morning because of the pain and from 3 until 4 am in the bathroom throwing up, i get very cold but am sweaty and light headed. I have been trying to read things online because i unfortunately do not have health insurance.. I am just wondering if something could really be wrong that i should go to a doctor?y I answer your health queries