Diarrhoea after eating

[MyTwinGirls]

My daughter, 13 has been having diarrhea after eating since Friday evening. Otherwise well and has no other symptoms just belly cramps a few minutes before having diarrhea.
could this be a developing issue? I’m confused she doesn’t feel sick or been vomiting. After sitting on the loo for a little while she’s right as rain again but has a feeling of needing to go more
no one else in the house is sick really so strange
any help ?

Has she started having periods yet?

There is something called the "gastrocolic reflex" where eating sends a signal to your bowels to increase activity, in some people this can lead to a sudden urge to poo. May go along with some temporary mild tummy bug, or irritable bowel syndrome if it persists for longer. Sometimes bodies are just "noisy".

Thank you sorry been to see the GP now and they have done a poo sample and urine sample. Still happening daily with a few accidents from the urgency.

She has started her periods about a year ago now

Could it be a gluten allergy or coeliac? Mine developed later in life and I get stomach pain and diarrhoea after having gluten.