Pregnant friends have been asking me if they can eat such and such food when we dined together. Sometimes it is not just because a particular food is best avoided because they may contain something that may harm the baby (e.g. avoid mackerel for the high level of mercury, thus avoid assam laksa), it is the risk of food poisoning that you should be aware of.

Food poisoning would cause dehydration, which then can cause uterus muscle to contract, possibly causing premature labour. So get in touch with your doctor if you suspect you have food poisoning.

Avoid unpasturized foods and drinks. This means green juice too and scrumptious apple cider fresh from the farm! If you really want fresh juices then clean them and juice them yourself and consume right away.
Make sure your food is cooked thoroughly, especially meats. Sorry beef/lamb eater, only well-done can do for now. Avoid hot dogs and deli meats. When it comes to meats it is simply best to make sure we are cooking ourselves.
Chicken is a high risk meat. Avoid pre-roasted chicken on supermarket shelves.
Harmful germs on chicken can multiply extremely rapidly at room temperature. 
Do not eat anything that seems to have a funny odor to you. This may seem obvious but it’s surprising how many of us don’t trust our instincts, especially when we’re at a reputable restaurant. Remember, you can get food poisoning from Les Amis as well as the hawker stall around the corner.
Avoid all buffets and prepared food that has been sitting out for long periods of time. You know, the ones with heat lamps and limp pieces of lettuce. That’s right, say au revoir to the buffet, even the one at Shangri-la!
When it comes to prepared foods in general, you just don’t know what you’re really getting, who made it or if it was cooked and stored properly. When eating out, stick to simple, fresh ingredients that have not been left to sit for long periods of time.
 

PS: What should you eat during pregnancy?