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Could you post your average diet/supplements from a couple days this week? It makes it easier to identify any particular item that could be stalling you. If you've massively upped your exercise and that exercise includes lifting, then you could be putting on muscle, and new muscle adds water weight in addition to the muscle itself.

Cigarette smoking, while being absolutely terrible for you, actually aids weight loss. Stress does not.

I think the best indicator of weight loss for guys who are active is inches. Are you clothes feeling any different? Do yourself a favor and get a tape measure and some ketostix (so you can be sure you're actually in ketosis).