Having your tubes clamped does not mean that you will never be able to get pregnant again. Many times when women have had their tubes clamped they have it reversed using tubal ligation reversal surgery.
Choosing a tubal reversal surgeon that has done this type of reversal already will give you the best odds to conceive after the reversal. Having the clamps removed and repairing the fallopian tubes actually has better pregnancy rates than many of the other types of tubal ligation procedure, which does more damage to the fallopian tubes.
For more information on having the clamps removed Chapel Hill Tubal Reversal Center has tubal ligation reversal nurses that can be reached seven days a week.