Experiencing my second loss where to go from here...

Lost my first at 9 weeks June 1st. Pregnant again with iui this go around. My hcg is only 53 at 4 weeks 4 days. They said they'll repeat bloods in a week, but I know already it's a nonviable pregnancy. Hoping my body will realize sooner than later so we can move forward.

I guess we have a lot of bad sperm/eggs. Probably because I'm 36 and he's 42.

Obviously I can get pregnant, but maybe ivf with genetic testing would be better odds. My hcg both times just doesn't rise appropriately.

Thoughts?