Not super likely, as sweet potatoes aren't frequently reported as problem foods. But you can have an intolerance, or allergy, or other problem with virtually any food. And sometimes these don't surface until you've been eating the food more frequently than in the past.
However... don't jump to hasty conclusions here. Cut out the sweet potatoes for a couple weeks and see if things improve. Then re-start the sweet potatoes and see if the problem returns (if in fact it went away). You should repeat this test a couple times before you make a final decision about sweet potatoes. Also... look at whether there is another food you usually eat with the sweet potatoes that you eat infrequently or not at all otherwise. Sometimes associated foods or ingredients turn out to be the culprits. Tracking down food intolerances isn't always easy!
Also, keep in mind that things other than foods can cause intestinal problems. Are you drinking plenty of water throughout the day? Sometimes when the weather turns cold we cut back on water without realizing it. Also, cutting back on exercise can "slow things down." Stress or emotional upsets affect some people in the gut area, too.
Good luck in solving this problem!
Pumpkin