Hi I Am Moazzam Ali, 28 Years Old Married Guy.

Hi

I am Moazzam Ali, 28 years old married guy. I got married 1.5 years ago and my wife couldn't get pregnant. After visiting a doctor and went through some tests we came to know that there is issue in my semen analysis. My rapid Linear progression is 10%. How can I increase this?
I got tested my sperm from a well reputed lab it was 35% and from another equally reputed lab it is 10%. What could be reason behind this much difference?