DD going to the toilet far to frequently

[StrawberrySnowflakes]

she never gos while at school and hasnt drank any more than normal.
shes been a good few times at school and since weve been home has been going every few minutes, three times while eating lunch and is still going?
she says she has a little bit of tummy ache(but i dont think she has i think she is agreeing with me asking)..and has just actually changed mind and said it doesnt hurt!
and it doesnt hurt when she go's?/
very unusual for her but is this just something and nothing?

sometimes it could be urine infection, sometimes it could be sensitive bladder....i also know that children particularly go to tiolet more often when they are anxious or worried about something.....how old is ur ds?