Husband going to urologist

My husband is 48 and has had issues emptying his bladder for the past couple years. He starts and has a difficult time finishing. He has dealt with ED in the past, but it does seem to come and go. His PSA levels are really low and have decreased since we have been together. I'm pregnant now, but the first time his semen was tested, he had 0 percent morphology and decreased motility. Could this be indicative of a health issue? I'm nervous that we won't get a clear answer tomorrow and that the doctor will have to run more tests. I just want his appointment to be over and have an answer. Please tell me what you think! Thank you!