I've previously travelled many times to the US via the VWP program previously.
So this time at the POE, the CBP officer asked me how long I am staying for and I said "2 weeks".
However, I realise now my flight is actually on the 16th day so I am actually staying for 2 weeks and 2 days technically.
It was very early in the morning and I was running on 2 hours of sleep so I messed up answering this question it seems. I wasn't trying to lie or anything, I genuinely made a mistake.
Would this cause future problems?
I had a return flight booked of course before reaching the POE so I'm thinking maybe the CBP officer would have been able to see that I was staying for 2 weeks and 2 days so I assume if it was an issue, they would have raised it at the POE. But I don't know.