What do I do...

So my husband and I have been trying for over a year and we are in the process of doing all the check ups. Well my husband went to the doctor to do his analysis and he didn’t produce enough...people told me maybe it was stress from being at the doctor, we weren’t abstaining long enough, he needs to drink more water, etc. so today he does it again but this time from home, we abstained for 4 days, and he increased his water intake....still not enough production. I don’t know what the next steps are or what else to do. I want to be supportive and help but I feel like maybe this is why I haven’t gotten pregnant...