Sciatica is not commonly referred to as mild. Not likely.
When was the last bowel movement?
That bend in your colon is called the splenic flexure, and is typically the region where most constipation occurs.
Try Mirilax and plenty of water.
To prevent constipation and subsequently colon cancer, eat more fibrous foods like fruits, vegetables, nuts, seeds and grains/legumes.
Ditch the sugars, syrups, nectar and juices for a month and see what happens. I can't promise you that you will cured of obesity and acne and IBS.
That takes about 8 weeks.
"Fat Chance..." by Dr. Robert Lustig M.D.