Am I wrong ?

So yesterday I was in the kitchen cooking. My son and my fiancé son was in the living room watching TV and my fiancé was upstairs with our daughter. My fiancé son started choking a little (s.n he’s sick and been coughing and choking all day. The choking was like something went down the wrong pipe). So when I heard him choking I went to him and was like are you okay baby and he says yes, he follows me into the kitchen and I directed him back to sit down so he did and I finished cooking.

A few minutes later my fiancé comes down stairs and look at me and says what happened. By this time my brain is on something else so I’m like uuhhh nothing happened and he goes with an attitude, Izzy was just choking what happened? So so admit I was a little taken back like and I was like nothing happened, Idk why he was choking but he’s fine now. My fiancé was upset because I didn’t mention his son choking to him. I told him it wasn’t intentional, it’s just his son was fine and the choking was major. Am I wrong??

I was so taken back because I’m like do you think I want harm for your child (we had just had an argument the day before because he was bothered that I put his son in timeout and that my son tells his son to sit down or gives him directions).