help - heaps of accidents 3 months after toilet trained! can anyone advise?

[olivo]

dd is 2.4 and was toilet trained a couple of weeks after her 2nd birthday. she was dry within the week and has gone for weeks woithout accident since. this week, she has pooed in her pants twice and weed on the floor at least once a day, today, she has surpassed herself and weeed three times on the floor in the last hour.

the only thing i can think of is that this has conincided with her dropping her nap, but i can't see how this would have affected it.
can anyone advise whether we should juts consider it a phase or try and do something (what?) about it?

it is a phase, don't pay too much attention to it, she is stll very young
children still have accidents even when they start school
sometimes children can have a bit of a relapse, it's as if they stop trying so hard and just "forget"
when she has accidents, don't comment on it, just clean it up, please don't tell her off, she really can't help it!

Maybe she has a urine infection - dd did this recently and I only twigged after about 5 days what it could be.

I've been trying not to grumble,and haven't told her off, but have congratulated her on any she's done in the loo. we've been out today and all wees and poos in various loos, then came home, she went to the loo, 5 mins later, a puddle on the floor!
hadn't thought of a urine infection, any thing else i should look for with that?