Because your tubes are clapmed I would say the possibility of a normal pregnancy is slim to none but because of the abdominal cramping you might want to head to the doc and check to make sure it is not an eptopic pregnancy. If the sperm fertalized your egg before the blockage and it implanted because it had no were else to go you could have a problem. If this is the case you should see your doctor as soon as possible.

All that being said their is no way for us to tell you if you are pregnant or not. You should deffinetly see a doctor if you are worried or take an hpt. I hope everything works out for you!