What, exactly, did you eat yesterday?
You're underweight and under-muscled. When you add muscle, your bodyfat will drop as a percentage. But really, seriously, don't stress over losing whatever kind of gut you think you have right now. Set some solid goals (performance, strength, and/or bodyweight), and plug along towards those. For reference, at your height, you're probably not going to have an "athletic looking" build until you're upwards of 230ish with the strength to match.
There's no reason whatsoever for you to go low carb. You need plenty of calories from protein, fat, and carbs. Even though you've got "a gut", you're tremendously underweight. Consistent hard training will put on the size you need.
These articles should get you on the right track, food-wise:
Why no grains? Do you have allergies or another health-related issue?
That's entirely your fault. You absolutely could have included arm exercises. If they're your "weakest" part (which they're not, I promise), then you absolutely should have.
This sounds wicked. Any pictures?