Hi oms,

I did a quick PubMed search and unfortunately, there is still very little in the way of information on this subject. Here are the two abstracts I did manage to find, related to your question:

Effects of TNF antagonists on sperm characteristics in patients with spondyloarthritis.

Fertility and reproduction in male patients with ankylosing spondylitis treated with infliximab.

Congrats on your plans for a baby!
mig