I have a baby girl is 6 years old after I gave birth to her I decided to have my tube tied because I had a very bad I experience through my pregnancy.the problem is I hope not,I have not see my period for about 2 month now is it possible I might be pregnant?

The odds are extremely low, but it does happen.
When they cauterize, sometimes they do it in 2 or 3 places on each tube, so you might want to get the records or ask.
You might have just skipped a period. If you are late after TWO cycles, start taking test.