My Husband Is Just Getting Over Bronchitis. He Now Has

My husband is just getting over bronchitis. He now has a lot of pressure in the lower part of his stomach every time he feels like he has to pee, which within the last 24 hours has become quite frequent. Unfortunately, when he does go to the bathroom, very little urine comes out. Is this caused from the constant coughing when he had bronchitis. If yes, what can I do to help him?