Don’t eat raw or undercooked eggs and avoid foods that contain them, such as homemade mayonnaise.Make sure that eggs are thoroughly cooked until the whites and yolks are solid.
Don’t drink raw (unpasteurised) milk, including unpasteurised goats’ or sheep’s milk. Don’t eat food that is made out of them, boil low fat milk it first.
Don’t eat raw or undercooked meat. Cook all meat and poultry thoroughly so there’s no trace of pink or blood. Take particular care with sausages and minced meat.
Don’t eat liver or liver products.
Don’t take:high-dose multivitamin supplements,fish liver oil supplements
FishThere are some types of fish you should limit, such as tuna and oily fish, shark. raw shellfish. Large fish — such as swordfish, shark, tilefish, and king mackerel — harbor higher concentrations of mercury, compared to other fish. Avoid salmon (farmed and wild), shrimp, canned light tuna, pollock, sardines, tilapia, and catfish.
You should avoid drinking alcohol if you’re pregnant or trying to get pregnant.
You should limit caffeine during pregnancy – don’t have more than 200mg of caffeine a day; from coffee, tea, soft drinks, energy beverages, and other sources may increase the risk of miscarriage, reduced birth weight, and stillbirth.