DD2 was toilet-trained during last summer, and did really well. However, since before Christmas, she has started wetting her knickers every day, and often more than once. Sometimes, she only wets a little bit then goes to the toilet. However, other times, she's clearly doing a full wee. I know these things often go along with major changes, but all the major changes (new baby, starting playschool) happened in July-September). She's just tutned 3 BTW.
Why has she started doing this now? And what can I do about it (apart from getting cross which I know is counter-productive but hard to restrain myself from doing)? I am losing the place with this