Latching issues

So my LO is 2 weeks old and she's doing pretty great at breastfeeding until just recently. For some reason she only wants to latch on just my nipple now? She used to latch perfect now she refuses to bite down properly and pretty much gags almost and spits out my nipple if it's in how it should be. And suggestions to get her to  accept it the right way?? I've tried holding her head so she can't pull away but then she gets upset and cries then I feel terrible like I'm hurting her 😰 thanks in advance!