Pregnancy - thoughts on how long after pregnancy you can have a TT

I'm a year post-op and considering having another baby, right now I'm being treated for back pain and I was wondering if anyone knew approximate length of time you would have to wait until you could get a TT after you had baby?

We greatly appreciate your interest in helping us build our Q&A database. To discourage vandals from posting garbage, however, we require people to register before posting.