I've been weaning my little girl for a month now, she's 7 months old and previously EBF, we gave the odd bottle of expressed now and again.
She was taking very small sips of water from a sippy cup until a couple of weeks ago.
We left her for a few hours with my mother, to give her tea and a bottle of expressed milk before bed - she refused the milk/bottle. I put this down to maybe being full and the first time someone else had put her to bed.
She bottle refused again a couple of days later with my Husband, due a feed and between meals (we give breakfast and tea at the moment) and was desperate for a feed when she returned.
Since then she's refused any cup or bottle put in front of her! She's still on 4/5 breast feeds a day and lots of wet nappies but is becoming constipated and straining and has a really sore bottom 
She's even getting upset when I just set her sippy cup down in front of her so she can handle/play with it.
I'm at a loss,any ideas?