11 week old refusing breast help

Jessica
My 11 week sleep of had been crying some at the end or halfway thru feedings. I then tried a few things to cut down acid.  That fixed it for a few days but now starting last night she will cry when offered the breast...even if she thinks I'm going to offer it. No fever, no mouth problems (thrush, cold sores etc) anyone have these issues.  Did they just resolve itself or?