I have really bad menstrual cramps and feel like I have to puke and I also get a fever please help!?

Bad menstrual cramps. This is from a chemical called prostaglandin. This causes all the problems you complain of. The good news is there are inhibitors of this chemical like advil (ibuprofen) and alleve.
See a doc. What you describe sounds like something that is not normal. I dont want to scare you but you better go be checked by a doctor cause you may need investigations and meds prescribed by a doc.
Stay hydrated. Stay at home rest and drink plenty of fluids. You can take anti nausea or antidiarrheal medicines. If pain becomes extreme, visit your local er.