HI, Welcome to HCM, I am Dr. Das
First of all, though your husband has more than 20 mill sperm but live sperm count
is lower than required .
Motility of the sperm should be more than 50% totally . Which is present .
But morphology of the sperm is lower than required.
First you have to do sperm morphology test using special stain which will show the abnormal forms.