No, it is best to eat freshly homemade soup when pregnant. Homemade soup has fresh ingredients that have not been tampered with and it is void of preservation and additives that might not be safe for the baby and mother. Canned foods are known to contain BPA ( bisphenol A ) which is a chemical that plastics contain, this BPA can transfer from the can to the food and though it is safe in little quantities, pregnant women are advised to stay clear of it in soups and pasta.