There is a difference between tummy pain and contraction pain. Tummy pain is usually caused by inflammation in the gastrointestinal tract or gynecological inflammatory infections, which can trigger tummy pain. If there is stomach pain caused by gastroenteritis, it belongs to smooth muscle spasm, and pain caused by gynecological inflammatory infection is due to bacterial infection that causes pain in the pelvis or the uterus or fallopian tubes. These pains do not lead to uterine contractions, but only to pain, and there is no tightness or hardness in the stomach, and no vaginal bleeding. If there is painful contractions, the pain will show tightness and hardness in the stomach, and it will be paroxysmal, with a regular pain for a while and rest for a while, and the pain will continue after rest.