Absolutely you should have an immunology work up--just to be on the safe side.
You should see an immunologist, and at the very minimum, he or she should check your Ig levels and sublevels, and do a b and t cell panel as well.
Hello jabelone,
Just get evaluated for the Young's syndrome which is also known as Azoospermia sinopulmonary infections, Sinusitis-infertility syndrome and Barry-Perkins-Young syndrome is a rare condition that encompasses a combination of syndromes such as bronchiectasis, rhinosinusitis and reduced fertility
Refer: http://en.wikipedia.org/wiki/Young's_syndrome
Although the chances are very minimal, but still to rule out the possibility of the same, a thorough examination is advisable. In the mean while continue the course of antibiotics.
Best.