Boyfriend is shooting blanks

Beth • Done with it all.
I've been with my boyfriend a year and a half an have been ttc for 6 months. I've noticed in the past when giving him oral sex very little semen comes out. But the last 3 times nothings come out at all. he feels like he's cumming but litually nothing comes out. Which is a big blow for our ttc. He's scared to go to the doctors atm as he feels like less of a man. Is there anything we can do to get him comming again? Any women out there who's so was shooting blanks but manged to get pregnant? Xx