OMG Please Help. Is she teething..? If not what in the world could it be? she won't stop crying and wont sleep?

I would take her to the doctor first thing hun. Babies can teeth early but sometimes other things can also be wrong. From dealing with colic myself this is what it sounds like to me. If you take her to the doctor they can maybe tell you whats going on with her. If she is teething and when she does I fully recommend getting her the orajel q tips and also the dissolveable teething tablets. Those 2 things together along with tylenol worked wonders for me. Good luck!