Unfortunately low sperm quality or the lack of sperm production is very common following anabolic steroid use.  A reduced semen volume does not necessarily mean that your sperm count and quality is also affected.  I would advise you to stay on the PCT course and then wait at least three months to see if there has been any improvement.  I would also recommend a semen analysis and if there is sperm present then it would be sensible to freeze this sample to preserve your fertility.