How long after a tubuligation reversal can u conceive?

Few months: Will have 90% success at the age of 30 , had children with same partner , rate drops progressively after 35 , other variables like sperm count , size of the tubes ( less than 3.5 cm ) , etc.

After the first ovul: Since tubal ligation is a mechanical contraception and its reversal means removal of a barrier, i would expect you to be able to conceive after your first ovulation following the reversal.