My baby has been hiccuping (that I can feel) since

Patient: My baby has been hiccuping (that I can feel) since 28 weeks gestation, but now at 36 weeks I notice she is hiccuping when I bend down or lay toward the left side. The hiccups have concerned me enough to mention them to my OB GYN several times and I had an ultrasound this week to look for cord issues. The ultrasound did not reveal anything concerning to the MFM doctor reading the scan.I can’t stop worrying. Is there anything else that could be causing this?

Doctor: