First, we must keep crabs clean. When cooking, we should pay attention to ensuring the safety of food processing and keeping them cooked. Don't eat some half-baked crabs to avoid diarrhea or gastroenteritis.
Second, eating too much of anything may be a load on the gastrointestinal tract. Therefore, even if the crab is delicious, it is generally enough to simply taste it without eating too much.
Third, you must eat some foods that you used to be familiar with, because the gastrointestinal tract itself is not good during pregnancy. Try not to eat something that you haven't eaten before, so as to avoid gastrointestinal intolerance and easily cause gastrointestinal discomfort.