Hello Jas,
I'm certainly no authority on anorexia, or in fact anything similar, but I do know how it can creep up on us quite unexpectedly. I'm certainly not saying this is the case with you, but would just like to share a little bit about my experience with you.
Years ago now I had a tummy bug and couldn't eat for over a week. Consequently I lost well over 1/2 a stone in weight. Now, prior to this I had noticed I was creeping up the scales a bit and was a bit concerned - so I thought to myself when I was over the bug 'great' !! Trouble is, I just kept on going. After a few more weeks I had lost nearly 2 stone and yet didn't look any different when I looked in the mirror. I had became what I've since been told was borderline anorexic. Not quite anorexic but giving serious cause for concern. My poor hubby had to resort to serious tactics and one day put down his knife and fork and said "if you don't eat - I don't eat" Well, that was the turning point for me thankfully as I then realised what was happening to me. But, it was a struggle to get back to normal eating (I too had gone without anything more than a couple of biscuits or an apple each day) as my throat felt as though it was closing over. But, with perserverance and support from my hubby I managed it - and have never been back there since.
I haven't told you this to frighten or to shock you - rather just give you something to keep an eye on as it were.
You certainly don't sound screwed up to me, and I hope I haven't spoken out of turn.