When i get to see my inlaws in our house i feel so uncomfortable, i have that strange heavy feeling to them.

Hi, It happens with me too. And the reason is that I do not share open relationship with them. They want me to behave a certain way, like they have perceive daughter inlaws to behave in their minds, and this makes me feel very uncomfortable. When I am told that they are coming, I start feeling a strange kind of pressure. It is probably the pressure to behave in a certain way. I totally get your point.