Ovulation tests

Hey ladies, I've been using the clearblue advanced digital tests

It uses bluetooth and tells me when im high fertility or peak for ovulation. Has anyone used this system? Can yall tell me if its good or not?. This is my 3rd month of using it and my 4th month of trying to get pregnant. What other ovulation tests are good to try? Im feeling very anxious. My nerves are shot! And yes ive heard that 4 months is a long time to try, i can help but feel like maybe we're not doing something right