Help- confused with some rough news!

Just got the results of my husband's sperm sample over the phone... They said everything about his "sample" is low, the count, motility, whatever the rest of the lingo was they used. I'm scared, sad, confused, frustrated. I know he feels the same. He's been on a ton of medications and smokes weed, has anyone heard of this? And is this a situation that can be resolved somehow or are we doomed to have another?