Belinda, I was going to suggest about AF too. Apparently the flavour of your milk changes with the hormones, so maybe that's it.

You will find that you will get quite a few restless or unsettled feeding periods over the time you bf. Growth spurts, teething, sore mouth, AF, you name it, it doesn't take much for bubs to become unsettled.

Big hugs to you. You are doing a great job and Julia will settle soon enough for you. Hang in there sweety