Firstly, have you been charting your fertility?
Do you know why you haven’t conceived?
If it were me (and I am infertile, also) I would chart first to learn about my own body and its cycles, however whacky they may be.
Then I would seek the help of my OB, who would most likely refer me to a fertility specialist. This doctor would run tests to determine several things: who was the infertile partner and what is the matter. Then they will see if that problem can be corrected. Oftentimes it can be corrected and the couple can conceive without ever having to resort to more artificial means.
If not, as was the case with me, then the fertility doctor will most likely prescribe a fertility drug such as Clomid. This drug will make you ovulate but will not “get” you pregnant. As your sisters said, the rest will still be up to God.
I have used Clomid three times now and gotten pregnant each time on the first try, for which I am extremely grateful.
This info might be old news to you and you may have already done a lot of it. If so, I apologize!
Good luck to you and keep me posted on how things are going.
Carrie