My husband admitted to cheating and then tried to convince me to go with him to the emergency hospital without telling me cause he thought he might have caught something from the woman he cheated with

M31, married to W30 for 6 years, no kids. We had a large fight and eventually he admitted to always cheating on me. He told me how he started to think he might have caught something from the women he cheats on me with. He convinced me to go with him to the urology hospital. I didn’t know what to think of all this but my sister convinced me to just go and check to make sure he didn’t give me anything. We went and they told him it was just an infection. I asked the doctor if it was an std and he said no. So my husband looked relieved and told me that he was in the clear. I then asked the doctor when the infection can be treated and he said that it was treatable now and that he can go back to his sex life in 2 weeks. My husband looked relived as if he was happy that he can go back to cheating. I just left the hospital when he tried to stop me from leaving and he looked so worried that I might leave him. I told him that I’m not leaving him over this and that I will stay with him. He looked really relieved and happy. I don’t know what to feel. I’m upset that he cheats but at the same time I feel like I won by staying with him. I don’t know.