How do I know if I'm in ketosis?!

I've been on keto for a little over a week now. I track everything on MFP. I've been staring under 15 carbs- but the thing is I have this underlying worry that what I'm tracking isn't "accurate". I've been measuring everything I eat and entering my own food labels (I haven't used any of the pre saved foods when logging- everything I eat, I log in that specific food label myself). I guess I'm just worried I'm missing something (even thought that is an irrational thought I guess).

I don't have keto breath (although I have a super sweet taste in my mouth- but that might be from drinking water and mio), nor do I notice my pee smelling weird- although I drink A LOT of water, so my pee is pretty diluted (I literally pee 4-5 times an hour because I drink so much water). I also feel completely exhausted during the day, and I feel a lot hungrier than normal, but food doesn't sound appetizing. It's weird.

I don't have keto stix. I know that you are in ketosis after 24 hours of eating under 20g of carbs, but are there any other ways to tell? I'm nervous that I'm doing something wrong and not actually getting any benefits of keto.

http://imgur.com/5tzvHHf

Added a pic of my food diary for today from MFP, please critique and give suggestions if you see room for improvement as well:)

Stats- Female 5 foot 6 105 pounds (I'm not trying to lose weight, I'm trying to lose body fat) 19-20% body fat