I have worked out what it was, she has nipple confusion. Totally my fault as i have swapped breast for bottle and back again quite a few times with expressed ect. But after trying to persevere and re-attach her constantly to no avail, i have decided to stick with expressing. it does work well as i have a DD who is 2 and it frees me up to do things with her. Thanks for all your replies, although i was initially upset after realising what it was i am not happy to continue, at least she is still getting breast milk. Thanks again. Xx