I have you down as an INTJ, I think you're an INTJ. Do you feel content being alone? and find it hard to display your inner emotions to your family? You feel embarrassed if you do? Can be interested in esoteric things? Do you often prefer to sleep on the wall side of your bed? i.e. do you often prefer to sit on a seat next to a wall rather then one in the middle or open?
Well I don't know about content being alone, I do long for close friendship and companionship, but I prefer being physically alone for the most time, yeah.
I guess need to distinguish being alone and being lonely here.
Yes, for the other questions, but I don't see how those would confirm INTJ or not

Sure there's more to it, and based on individual circumstances etc too. I wouldn't strictly follow these typing, just something interesting and a bit insightful into your character for the current period in life.