i think you could just start doing body weight moves. about dot com has a bunch of routines and pictures of moves to do. there's lots of things around the house we can use as 'weights' in transition to getting stronger. like doing squats with books in a packpack, water in milk jugs/detergent containers. using the stairs is a really great one.
i think just doing 1 min. of jumping jacks/rope/or running the stairs could help you feel energized. you'll feel MORE productive. or just sit on an exercise ball contracting your abs while you type
i can't remember how to get to it, but somewhere on about dot com, they have a chart of a bunch of lower body exercises. they have one for upper body too. it has columns of beginner, med, and advanced. then you can always adjust the exercises to make them modified easier or harder. most of them don't use weights, some use a stability ball.
With all due respect to your trainer what matters is calories, not carbs.
We do count my calories--
I keep my calories around 1500 in addition to less then 100g net carbs. I have lost 73 pounds. Yes- my trainer does deserve respect.
I just don't have the willpower to count carbs, I am guessing I eat a fairly high carb diet and I guess I am doing well considering but I do wonder how my weight loss would go if I paid attention to that.
Maybe this is something I will focus on in the future but right now, I just envy all of you for being able to do so.