No pregnancie reported?

Hi all. I'm new here and considering donor 4391. I called Fairfax today and they said he became active on the website in August 2015. He seems like a great option, but he has no known pregnancies reported. Should this be of a concern to me? This is all so new, so I just don't know what's important or not. I will be doing IVF and have one daughter already from a previous IVF cycle (not donor sperm).