Not feeling embarrassed to follow the Sunnah

Q: We should follow the Sunnah unless it causes people to look down upon the Sunnah. Example: Eating out and insisting on sitting on the floor as Sunnah, or eating with your hands at a function where everyone is using a fork and knife. Is there any proof from the books of Deen (e.g. Qur'an, Hadith, Fiqh, etc.) or should we not feel embarrassed and follow the Mubaarak Sunnah wherever we are?

Waswasas and doubts

Q: I am suffering from ocd from 11 years. Recently I was on night shift and I slept had a wet dream in morning. I changed my night dress. I couldn't have ghusl so came home like that now I feel that the places I walked in my home are impure. Immediately after reaching home I had ghusal. Now I think as I didn't have ghusl I wore my shoes and socks and dress like that. I think they are impure.

Walking in front of the person performing Salaah

Q:

1. If a person walks directly in front of you, within a arms reach, in a masjid kabeer, should you restart the Salaah?

2. What about a small masjid?

3. Will the ruling change if the person was walking from in front, stepped directly onto your sajdah spot, walked towards you then pushed through touching your shoulders, but technically didn't cross in front from one side to the other?

Husband and wife not having relations

Q: I want to ask that husband and wife are living together, but husband deliberately not doing sex with his wife. The reason is that he is saying that he doesn't like her. It's been one month since their marriage but husband not giving rights to his wife. I just want to know what will be the impact on their nikaah and till how long their nikaah will be valid?