I had mine tied after my third. I was kinda forced into mine. My ex told me that if I didn't do it, he was going to divorce me and take my kids and go somewhere and I would never find them again.
I wish I had been strong enough to tell him back then to leave. Since then, I HAVE left him, but he's used my kids as pawns and as blackmail to try and get me to stop fighting him for full custody.
As soon as I woke up from surgery, I realized it was the BIGGEST mistake ever, and that I should have told him then to file for divorce. I spent the next two years paying off a nearly $6000 surgery to untie my tubes. I ovulated a few days after surgery, had my first period post-reversal on October 15, and got pregnant right after with this baby.
BEST decision of my life to untie my tubes and take my life back.
Not saying you shouldn't tie your tubes, but I'd recommend that it's a decision that shouldn't be made during pregnancy when hormones are high and so is the elation of having a baby. It's one that is best saved for post-baby when everything has settled down and heads are clear, etc.
Good luck with whatever you choose sailors!