Firstly, congratulations on your pregnancy.

Don't stress too much about what is done and dusted. In regards to the food, you would have already felt the effects if you had gotten food poisoning/listeria from them. The fact that you are so early in the pregnancy means that the baby has a good chance of not having gotten any of the effects of the alcohol at all. The first two weeks is before conception so all fine there. Then after that there is all the days it takes for the embryo to make it's way to the uterus and implant, so still fine there. And even after that the embryo is getting all it's nutrients initially from the yolk sack. So chances are that the embryo never even got a sniff of the alcohol