Known sperm donor

So my husband is paralyzed and we tried conceiving for almost a year. His sperm count was not great and each time we tried we would have to go to the hospital to have a special machine get the Soren out. The machine had a very strong vibration so it could have caused high blood pressure and also cardiac arrest so we decided after not being successful that year that we couldn't put my husband through that again. Especially because the doctor that specialized in that had left the hospital. So we went a different route asking his brother to be the donor he actually didn't mind at all and agreed to do anything we needed. So every month for the last past 5 months he has been coming during my ovulating time and gives us his sperm in a cup. And my husband puts it inside with a surging we haven't had any luck.. And I went to get check they said I'm good. His brother went to get check and they said everything is fine too... I'm just getting so impatient now and had to write about it