Oh, been there. Been there. Still there to some degree. It doesn't sound like I am so limited in what I can eat, but I know the different meals and the giving up.
When you say you've stagnated, does that mean you are maintaining? I keep saying, maintenance is a victory. Claim it.
You don't say how old you are. Every few years once you hit your mid-30's, it seems like you need to reassess what you eat. It happens in fits.
I have a feeling from my own experience that to some extent, your body needs to be ready to cooperate. I know that sounds odd, but your body has ideas of its own as to whether to gain, lose or maintain.
Your inability to make an effort for yourself means you might not be paying attention to what goes in your body. Somehow, make it an intentional meal, and not piecemeal. It could be that you are inadvertently eating too many calories. Especially when we are eating something we don't want to eat, we are left wanting more, not because we're hungry but because we didn't eat what we wanted. Pay attention to that.
Exercise isn't great for weight *loss* necessarily, so don't fret over that too much. In fact, intense exercise can make you eat more than you really need. What exercise does seem to do, besides making us feel great, is that it helps make it easier to maintain the weight. I haven't been exercising as much because of college, and after a recent camping trip (I'm *outside*!! I need another 10,000 calories NOW!!!) I had a harder time reestablishing my usual weight. It seems to even everything out, and makes us feel awesome and walk tall. I've taken to doing yoga to my favorite albums, and heading out on a walk as soon as their dad gets home, as often as possible (yes, the house suffers for it, but *I don't care anymore*).
How long have you been working with your allergies? Is it recent? That's a demoralizing time. It was so hard for me to find anything to eat. I've managed, but it sounds like your diet is more restricted, which is partly why I ask. Over the years, I've been able to add back foods that bothered me, and completely abandoned other foods which seemed to get worse after all my restrictions.
You will feel healthier with your diet once you are able to start exercising again (white flour isn't the end of the world) hopefully creating meals for yourself, even if it's what your kids are eating. You'll feel better once you can embrace "good enough" healthy eating. Don't sweat it. First find foods you enjoy eating.
"She is a mermaid, but approach her with caution. Her mind swims at a depth most would drown in."