I am 4 days have had mild to moderate cramping for 2 days feels like my period is coming go to the restroom but nothing. LMP was 9/1/06 had lost of baby dancing 9,11,12,15,17 should have had next period 9/29. Took a pregnancy test mid day yesterday and it was negative. I have a 3.5 year old that I did not find out I was pregnant with until I was 7 weeks. Some one please give me some insight. Am I experiencing AF cramping, implanation cramping??