Can’t eat prawns or bagged salad?!

Claire • Baby Girl born on 25th March ‘19 💗, first time mum! 👶🏻

So just been for my booking appointment and I’ve been told I can’t eat prawns or bagged salad?! Now I’ve read up on most things pregnancy related but I’m sure it says prawns are fine cooked but the midwife has said no.....also no bagged salad cuz of chlorine levels?! Have I just got a really over zealous midwife or did you get that advice (ps-I love prawns so much 😫)