Need Support

My husband and I are trying. I am a nurse and this whole process is fun and exciting. My husband gets weird when I talk about ovulation and the importance of timing. I texted him today saying that we needed to have sex and he immediately shut me down saying that I was turning it into a job. This is the first time I have texted him saying that. I have to go to work tonight and only have an hour before work where we are both home. I am trying to respect his feelings and I stopped talking about the process to him. Am I wrong for texting him? I am trying to keep him involved and up to date. I am also trying to make this exciting for him we are creating a baby it’s an amazing process.