I can see the FS point in putting a time frame on ttc naturally before moving onto something else. But it is your choice to make. I had an ectopic pregnancy and tube removed and went on 2months later to have surgery to repair my remaining tube and have it flushed. They removed some adhesions that were pinning the tube down so it wasn't able to move the growing embie or egg down the tube (putting me at an even higher risk of another ectopic) alot of adhesions were left and they did tell me there was a high chance they would re-adhere to the wrong places. I fell pregnant 9months later naturally (the cycle before we started IVF) so it was successful for me.