Blocked fallopian tubes - surgery?

I am gearing up for embryo transfer #3 and I'm wondering, as I have blocked fallopian tubes, if any toxic liquid could be leaking from them to prevent embryos implanting. Should I consider tubal ligation (clipping or tying fallopian tubes shut) to prevent this? How do I tell if there may be fluid leaking out? Anyone had surgery to remove or clip their fallopian tubes? Did it help you conceive? Equally, anyone not had surgery with blocked fallopian tubes and had a successful pregnancy? I'm keen to hear from you!!