Crab belongs to cold food, especially crab legs belong to big cold food. If you eat crabs in the early stage of pregnancy, it is likely to cause preterm miscarriage or inevitable miscarriage. If there is no pain in the lower abdomen or vaginal bleeding after eating crabs, then there is no need to be nervous, and you can stop eating crabs in the future. In addition, there are foods that should not be eaten during pregnancy, like barley, which has the effect of sliding the fetus. If you eat barley, it is likely to cause the symptoms of miscarriage, so the diet during pregnancy should be careful. In addition, it is best not to eat seafood, because they are cold food. If you eat it, it may cause premature or inevitable miscarriage, so your diet during pregnancy should be especially careful.