My 7mo Bichon x was neutered on mon. He has weed since then but irregularly and today he has only gone once, this morning. He went for a check up today to vets and all healing well - stupidly at the time I did not mention he wasn't peeing a lot and it hadn't been so long then. Should I be concerned? He is not exactly bouncing back after the op but the nurse said this was normal for some dogs. He is still on pain relief btw.