TOCO 28 at 27 weeks pregnant?

I had to go to the hospital last night due to dehydration from a nasty stomach bug. I noticed on the monitor that my TOCO reading stayed around 28. Is that normal? The OB on call never said anything about it, nor the nurse. I am worried this could mean preterm labor or be abnormal. I didn’t feel any different besides just feeling bad from the stomach bug and dehydration.