A.R.
This is one of those times when you need to go to the doctor asap because of the risk of have an ectopic pregnancy. A tubal litigation means that you had your tubes cut and then burned. With young women it is possible that the tubes can grow back after such a procedure, which is why this procedure is not usually done on women as young as you are. While it is possible that you are pregnant, the most likely scenario is that it would be an ectopic pregnancy which is dangerous for you if caught late. I will tell you not to worry overly much because it is unlikely so soon after the operation, but I would still recommend you going to the doctor. Good luck and let us know!