4 days late, cramping but no period?

i am 4 days late for my period and im having slight twinges (cramps) on my left and right side of my stomach and they can be slightly painful but not extremely painful , my hurt and i do feel a bit strange? a slight sick feeling not too much but enough for me to notice and it only lasts a few minutes? i have been ttc with my boyfriend ? what are the chances im pregnant?