Help?

Not sure if this is the right group but I’ve been trying to get pregnant for the longest about 2 years!😫 so I went to my OB and got check they said everything is fine and nothing is wrong with me.. so my husband is thinking it’s him.. maybe his sperm count is low? Where can I go to get this checked on? What can I purchase to help raise his sperm count? Or just any tips in general to help conceive😕