I have no advice on this subject, but lots and lots and lots of (((hugs))). I have my own unhealthy relationship with food (it's an SI tool) and to me bread seems like a huge step concidering how you feel right now, maybe try smaller steps? Like yoghurt or custard?
I'm sorry you're feeling so low, don't beat yourself up, you've been doing a great job of looking after yourself. D0N'T discount that bcoz of how you feel today. I'm sorry I don't have any sound advice, just didn't want you feeling alone.XOXO