How do I know if I'm in ketosis -- without the sticks?

I've heard that people get a metallic taste in their mouth and that many people notice stinky urine.

I've noticed the latter but I don't have a metallic taste in my mouth... it's more like a... je-ne-sais-quoi taste. I can't explain it but it's different from normal and I only get it if I'm low carbing and haven't eaten in a while. Is this the keto-breath? I'm not hungry... and my carbs cravings are disappearing. Do you get thirsty when in ketosis? OMG - I'm almost inhaling water and I just can't stop.

Sorry if this question is redundant. The atkins book didn't seem to talk a lot about this as he is in love with the keto-sticks.

Thanks
Alex