Sex in fertile period

So I did something dumb on the weekend when I was drunk.. Had unprotected sex. He said he might have cum a little inside me. We stopped before he fully blew. It was during my fertile time of my cycle - day 12 😳 cycle is usually 26-28 days. I'm not due for period for another 10 days. Can you get overly hungry and stuff few days after? I'm just stressed bout alot of things and dont know if I should be worried or not. Didn't have morning after pill