Can't get pregnant because ruptured appendix

Hi ladies,
I had appendix surgery 15 years ago. It was ruptured with gangrene.
My doctor wants to do Lap, she also suspects endometriosis. I want to do less invasive procedures first.
I am doing saline sonogram in the middle of June. My dr. suspects that I have blocked tubes. I am wondering if saline solution can unblock my tubes?
We ttc for 18 months all tests for both of us are perfect.
What tests have you done so far to conceive?
Thank you!