Constipation and Bloated Stomach
Increasing the hormone progesterone during pregnancy can cause flatulence and constipation or difficult bowel movements. Bloated stomach and lots of gas can cause pain in the stomach.
In young pregnancies, high hormone hCG can also cause symptoms of flatulence and nausea to vomiting, which mainly occurs when kissing, seeing, eating, or just imagining certain foods, which are often called morning sickness.
Pain due to stretching of the ligament (the connective tissue hanging from the uterus).
Pain that is felt by sharp pain in the lower abdomen to the groin, occurs suddenly and is triggered by certain changes or movements, and will disappear on its own in a few seconds or a few minutes.
sumber: https://nurseberkarya.blogspot.com/2019/03/perut-perih-hamil-muda.html