man help

I was giving this guy head yesterday and it went on for a while. I thought I was doing pretty good, but all of the sudden he was like “i’m good I finished” even though there was no cum or anything that came out in my mouth or anything. I am really insecure about this bc idk if he legit finished and I didn’t notice, if maybe he had a problem finishing bc of smoking/being buzzed, or what. i’m genuinely asking what y’all think. I don’t want to make him u comfortable or insecure by asking but I feel like I did something wrong and I just can’t help overthinking it.