Is it possible for your metabolism will slow way down and adjust to what you are eating? I am eating way less than I used to before starting my journey, however this last week I have actually gained a little bit each day. Nothing has changed as I am still under 20 carbs per day.

Do I need to look at calories as well? Rather than just eating low carb to stay under the limit, should I also make sure I don't go over some magical calorie line?

Thanks for the help.