I experience pangs of pain in my lower right abdomen. What could be the reason?

Hello doctor,

I am a 50 year old male. My height is 5 feet and 10 inches, and my weight is 260 lbs. I am in good health with excellent vitals. My blood pressure, sugar levels, and cholesterol are in exceptional range. I have never been on any prescription pills. All of my routines have been normal and regular and I am currently working on continuing to lose weight by adjusting the intake of calories, but still eating the full range of foods. It has been a safe and gradual process and I am down by 35 lbs over the past two years. I do not exercise now, but I stretch every morning for about 20 to 30 minutes.

For the last week, I have experienced pangs of intermittent pain in my lower right side. I would approximate the feeling to be about 2 inches inside my side and just about at the lateral side of my body, perhaps a bit more towards the back. The pain is not acute, nor persistent, and it seems more present once I wake up. It does not bother me at all during the night. My own research does not seem to align with appendicitis or something abdominal, and I am beginning to believe it is a temporary muscle spasm of sorts, primarily due to a lousy work chair which has been a recent change. Again, all bodily functions are normal and I have not had headaches or fever or pain of any kind elsewhere. It is localized and randomly repeats only in the lower right, internal area I have described. I would like to know what is on the field of considerations, serious to not, so I can assess the next steps.