Hello dr, i am asking a question for my girlfriend who just found out she is pregnant (+\-4wks), is it normal to experience on and off burning cramps?

While not universal: cramping is not an unusual symptom in early pregnancy. Of course the processes that are going on ... implantation of the fertilized egg into the uterine wall, growth of the microscopic embryo ... would normally not be perceptible, the cramping may be associated with changing hormones that are ramping up to sustain the pregnancy. I wouldn't worry about moderate cramping; anything more severe,to Doc