This might be useful to someone at some point...
DS aged 3.5 weeks has been breastfeeding brilliantly from the beginning.
All day today though, he's been worrying me by not latching on properly, faffing about, getting cross and generally not feeding for more than a few minutes at a time.
I've only just sussed that it's because it's the first time I've worn a purpose-designed breastfeeding top. The holes are about the size of a fist, he could feel them with his cheek/chin and he didn't like it - must have thought the curtains were closing on dinner.
Think I'll stick with the old double t-shirt method in future, like I did with DD!