Awww hunnie, big ((hugs))
I have felt similar, when friends arrange to go out. They didn't invite me out once (I didn't even know about it, until I saw pics on facebook!) I think people think because you can't drink, you can't have a good time!
Sometimes "blips" are not just a learning curve, but I do think they are good for us (not calorie wise, i'm talking emotionally)
We always end up thinking (esp when chronic tummy ache kicks in) that whatever we blipped with, was so not worth it...and I believe it helps for the "next time" we feel like our food demons are upon us.
To help me, I have bought some chicken fillets (skinless) and I keep them in the freezer. There have been 2 occasions since a very bad Indian curry binge that I've had visits from my food demons, and the chicken has been there for me to cook and eat. When I have done this my weight losses haven't been altered. I think it is an idea to buy in some "safety food" for when times are hard.
You're doing soo well, don't let this blip get you down too much. Today, I'd drink lots of water to try and flush out any bad things that may be left in your tummy. Then hopefully the ketosis fairy won't be too far away!
Big HUgs x x x