breastfeeding

Cassidy
So this is my first baby.....when I try to put her on the breast all she does is cry and tire herself out FROM crying. So I pump that way she's at least getting my breast milk...any ideas as to why she does that?? (Edit: she does suck maybe 3-4 sucks and then stops, cries and repeats, so she's not actually "eating" like she should..."