Semen analysis 0 & 2 miscarriages ??

Kourtnee • Mommy to 1 amazing 14yr old! Trying for baby number 2 Ttc: 5yrs & PCOS FERTILITY CLINIC JOURNEY STARTED 5/17/20

So my boyfriend & I have been TTc3 years now, finally saw a fertility clinic & his semen analysis came back 0... being referred to another urologist because the first one didn’t work out... our fertility doc finds it very odd that we have had two miscarriages & a few chemicals, so she ran blood work to check his & I levels and both came back normal today..... so any help would be great any  theories as well? I even showed her pics of test just so she didn’t think I was crazy lol