Freaking out!

Just found out my husband has Super low sperm count (300,000 when it should be at least 15-20 million), motility was a little low (33% when it should be 40%), and they couldn't even test morphology b/c they didn't have enough concentration to test :(
He's going to a Urologist this week.  My doctor was planning to start me on Letrozole but now they might wait on it as it may not make a difference.  
I'm also 220lbs and 5ft tall, so I'm nervous as I'm sure my weight also makes this harder. 
I'm thinking my only options will be <a href="">IUI</a> or <a href="">IVF</a>.  
I'm pretty new to all this.  I would appreciate any reliable websites anyone uses for medical info on this stuff or any stories/info/advice on <a href="">IUI</a> and <a href="">IVF</a> or any other options that may be out there.
I also heard about a male fertility supplement to help with sperm count.  Are these safe? Any thoughts?
I will of course also ask my doctor these questions, I just like to get other research and opinions as well if possible.
Thank you Glow !