I have had tubes tied and the ablation procedure i am now five week preg. how dangerous is this?

Possibly: It is imperative that you rule out the possibility of a tubal pregnancy (these may occur after a tubal ligation). A ruptured tubal pregnancy could be fatal. See your gynecologist immediately for blood testing and a sonogram to make certain you are not dealing with a tubal pregnancy. If not, you doctor can discuss the possible problems associated with pregnancy after endometrial ablation.