Protein Powder

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Hello,
Every morning I do some sort of exercise, like push ups and squats. Then I drink a smoothie with coffee, coconut/almond milk, ground flaxseed, butter, coconut oil and a protein powder. This is the one I use: MET-Rx Protein Plus Metamyosyn Protein Blend found here: http://www.amazon.com/gp/product/B000GX9LZQ/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1
There are only 3g of carbs (2g of sugar) thats why I got it, but it's not a whole food, are there things other than carbs I should concern myself with this other than carbs in regards to ketosis?

About the sugar, if I'm staying below 25g of carbs a day, if 10g of it is sugar (lets say) does that matter?

Thanks