My daughter frequently presses on her lower stomach, almost to the pelvic area. She does it until she starts sweating. She first did it when in her high chair. She just turned 5.  She had a small bowell movement earlier today but is currently very independent and hates telling me when she goes or anything about it.
HI, Please inquire your kid in a softer and tender note, whether she is having any pain while passing urine/she is holding urine. This may be associated with constipation also resulting finally in urine infections. Get a urine test done. Hope it is usual for you and ready to help further