confused!!!

megan

so normally my periods run on a 27 day cycle and for the past two months they have been coming 24 day cycles which was spoke to be the 6th of June it didn't come I got no bleeding and not even spotting .. I did take a test yesterday and it was negative. and this morning I have been having cramping on my right side... if it ends up switching back to 27 day cycle it will be the 9th of june .any one have any experience like this ?