I'm 38 tubes been tied n burn since 1998 what are my chances?

Not zero. All tubal ligations (tubes tied off) include tying off both cut ends of the Fallopian tubes, cutting each tube and burning the cut ends with eclectrocautery. You would think that there is no way that a sperm could fertilize an egg after all if those procedures. On average 1:250 women with bilateral tubal ligation get pregnant.