I am experiencing pain on the right side of my abdomen. It started slightly about 24 hours ago, and was still only about a 2 on the 1 to 10 pain scale when I woke up this morning. But it has kept escalating to the 4 to 5 range, with no signs of letting up. I am drinking just water, and I ate a banana this morning. I am thinking of antacids, but afraid I might make something worse. I am a 54 year old male, in general good health. Any suggestions? Thanks.

See a Dr get a diagnosis and then we might have some ideas to suggest

Abdomen is below your belly button. So appendix? Pretty low on the right, but pain can present itself in other places. Acute or chronic.
Stomach is above your belly button. Gall bladder? Pain can be dull or sharp, come and go, be back or front, or both.
That's just TWO of the most common.