You can get lots of different pains when you are pregnant due to ligaments/skin and muscles stretching to make room for the growing baby. Also if you are dehydrated you can get stomach pains. Drink as close to 2 liters of water as possible everyday. If you continue with the pain on a regular babsia after this or you habe orher symptoms like buring with urination I would make a doctors appointme2 to ensure you do not have a urinary track infection.