What's happened...its all going backwards???

[Kelly211177]

Hi
I'm in need for any advice or ideas as I'm at the end of my tether!!
My 2.5yr old used to be so good going to the toilet. She would ask for the potty or the toilet and run into the bathroom herself and use the potty, put it down the toilet and stand on her step to flush it but recently it's all changed and I don't know why?!?
In the past 2 weeks, she takes her nappy off (only when at home) and poos and wees on the carpet around the house. She will tell.me I've been to poo on the carpet and everytime I ask her why she doesn't use the potty or the toilet and she either says no or says sorry but doesn't it over and over again!!
Her behaviour has changed recently also, she has become a little terror and she shouts at me and demands things and generally doesn't listen to a word I say.
Im a single parent so I don't have any support or back up on this and was hoping someone may be able to give me some advice.
Thanks