Sure. Clamps, probably hulka or filshie clips are the easiest to reverse and should give you the highest success rates. Length of time from the tl is a zero factor. Just make sure that you find a fertility specialist that has a lot of experience and expertise in microsurgical tubal reversals, your partner has a normal sperm count, you have a normal fsh and amh level and noting else obvious is wrong.
Always possible. Tubal ligations are not 100% effective. If the tubal ligation was done at delivery it may be a little less effective. Never say never in medicine. I have a patient who became pregnant many years after her tubal ligation. It is always a possibility although not as likely.Tubal ligations are generally 99% effective.