cramping please read

im currently 12 dpo. af not welcome on jan 2. the past 3 days ive been cramping only between the hours of 11am to 6pm. weird and strange for me bc i never get like this before af. along with cramping, comes extreme fatigue and nausea. once 6pm hits i feel like a brand new person whos nissed out a whole day. plan to test on the jan 4. hopefully i can hold on that long if af doesnt show. dh said no pregnancy until af is official absent. what do you this could be? happy new year to everyone and baby dust to everyone!!!