Have you looked into PCOS testing? I could not get a positive LH test either and ended up finding out I have PCOS with insulin resistance from some blood work. Once they started me on progesterone and Letrozole, I finally got my first positive LH tests. Still not pregnant yet, but it’s a good start! My doctor told me that if it did not work within six months of being on Letrozole, to let them know, and we would look into fertility options. You may want to readdress this with your OB.
When I found out I was pregnant my LH showed as peak