Why do I experience stomach and lower abdomen pain?

Tummy wind and bowel blockage can be uncomfortable. This condition can also make people poop less regularly. It might happen because of not eating enough fiber, not drinking enough water, or lack of physical activity. Tell your father to eat high-fiber foods such as fruits, vegetables, and whole grains. Additionally, make sure he drinks plenty of water and stays active. Sometimes, medications can cause constipation, so consult the doctor to see if his medications might be the cause.

This is a likely situation. If you experience difficulty swallowing, have severe pain in your chest, or are Short of breath, go to the hospital as soon as possible. You may try drinking little sips of water to help it down. Refrain from the activity of self-induced vomiting. If the signs persist, seek medical aid at once.

The problem might point to appendicitis, the inflammation of the appendix. At times, pain takes place quietly, but if it is worse, don't overlook it. The signs of appendicitis might involve the patient having high fever, nausea, and loss of appetite. Don't hesitate to go to the emergency department as soon as the suspicion of appendicitis arises. Surgery could become a necessity in the process of getting your appendix to remove it and thus keep it from rupturing. 

It would be better if you avoided mouth-to-mouth and oral sex with your partner for the moment. Viruses like hepatitis A are passed on from person to person through bodily fluids. The health of your liver would improve if you get rest, besides sticking to a diet of nourishing, healthy foods, and overloading on water. The body takes time to regenerate and heal.