Third month trying with donor :(

This is mine and my partners third month trying with a donor. The first month I used an off brand ovulation kit and kept getting "negative" results tried with a donor anyway. Second month used the clear blue digital advanced ovulation kits and got a "high" reading everyday for 8 days then nothing still used a donor. This month I'm using the clear blue ones again to see if I get a "peak" reading but we're trying with our donor again either way and we have a drs apt scheduled to see. But I thought I would ask here first.