our little 12 week old pup was wormed fri, sat, and sunday just gone, she now has very very runny poo, is this normal??

It could be anything.  I have the same problem on occasions with my pup and worry about the food I give him then watch him dig in the garden and try to eat snails! Try him on mashed potato for a meal or so and he will soon be back to normal.  It's a tip I learned from users of this board and works wonders.

Hiya........mash is good for binding but also a bit of live yoghurt is fantastic especially little pups as it helps the gut to sooth and get rid of any "nasties" that might have been picked up.
Pauline

A couple if my dogs always have loose motions and/or are sick after worming....don't worry
Archer