Late Cycle

Johnnie

According to Glow cycle was suppose to start yesterday, another app states it was suppose to start Wednesday and another app said Monday. I cramped on and off on Monday and Wednesday, no cycle. I had really bad gas and pooping a lot, today it turned into diarrhea. I went to the restroom at least 7 times today, came home and tested it was negative. I am 14DPO, is it possible I could still be pregnant?