At home sperm test- do they work?

Susanna
Have any of you have had your SO do an at home sperm test? I'm hesitant to bring it up if it's not an accurate test because my DH gets sad thinking it's his fault we haven't conceived. I hate having him feel that way but I'm so curious why it hasn't happened for us. The thing is my period is like clockwork and I ovulate every month. So did you continue to go see a Dr? Was it accurate? How did you bring it up? Or would you recommend going straight to the Dr? So many questions lol. Thanks in advance:)