I am sup post to have my period in 11 days but i am have lower stomach cramps but no blood could i be pregnant??

Possible: It is possible that you have just conceived but it is unlikely that pregnancy is causing your symptoms. It could be constipation,irritable bowel syndrome, a bladder infection, or muscle strain or any of a number of other things. Try heat and if this persists or worsens see your primary care doctor or an urgent care clinic. Hope you feel better soon.