Hi Annie and congrats on getting through the first few days!
I cycled through the Big C and diarrhea the first month or so, so I think it's pretty normal. Depending on what your diet was like before IP it can take awhile to adjust. Are you getting all your oil, salt and water in?
The general thought around here is that keto sticks are pretty useless. They aren't terribly accurate and as your body gets more efficient at burning ketones they may not show up in your urine. Plus if you're getting all your water in your urine may be diluted and they wouldn't show up. If you are following the plan and sticking to what's on the sheet you will be in ketosis.
As far as feeling you aren't losing this week - don't get stressed! Stress is not good for weight loss.
If you are weighing daily you might want to stop and just use your weekly weigh-in. TOM, fluid retention, etc., etc. can all affect the scale. I know I can go 4 or 5 days at the exact same weight or up a pound and then drop 3-4 lbs seemingly overnight. You'll probably find your body has a rhythm with it's losses (1 or 2 slow scale weeks and then a big week).
Just hang in there - if you stay 100% on plan you
will lose weight!