Try not to worry hon. The risk of contracting listeria is really low. I'm sure all pregnant women have made a few whoopsies here and there, I know I have My sister and girlfriends who have had their second babies are always telling me about the naughty stuff they ate with their seconds and they're all fine. I'm not recommending to race out and eat all the 'no-go' foods but I reckon all the hype about listeria is a little bit over the top, IYKWIM