If you're pregnant the very last thing you should be doing is eating out and not cooking at home. Why you may ask? Well, as someone who has worked in hospitality for a number of years for various restaurants, including fast food, fine dining and one michelin starred one, foods in restaurants can and probably will trade hands by various hands. While of course most places, at least in decent countries will do their best to either wear gloves and/or be sanitary, bacteria from foreign people is more harmful than bacteria from one you will get at home by your partner for example. Much more likely to get sick eating out, even if food is cooked, in this case, well done.