TTC for 2y 6m ..

Jodie
Hi,
​I am 22 and me and my partner have been TTC for 2years 6 months. My partner is 25 we have had lots of tests so let's start with my results- ultrasound pelvis scans show pcos, blood results don't they are normal. Blood tests also show I'm ovulating. My partners sperm count - 4x the average quantity however below average on quality. The dr has had me on metformin tablets for 3 months - 3 more months on the tablets then he can no longer help us he says. He will be referring us to a specialist dr for my partners sperm quality. I feel like he is using it as a way out. I also use a clear blue fertility monitor so can guarantee I'm having intercourse whilst ovulating. Any advise?