I feel embarrassed for almost falling asleep (and snoring loud) during conference lecture

I know like 100% sure that I snored, as some people looked directly at me. I can feel myself nasal/throat when I snore 😳
I kept falling and catching myself asleep, putting my head down and then jerk my head up during the almost entire lecture. Yesterday was my first conference and I felt exhausted after flying there (US to CA, first time flight).

I’m trying to get over it but I’m concerned if that left a real negative impression