Like on usually if it’s close adoption but there not taking baby right after birth?

I’ve heard that during pregnancy women get more difficult, like havung PMS for 9 months. How do you keep your relationship working great when you are pregnant? How do you deal with the idea the he might not be attracted to you anymore cause you are gaining weight, or because you’ve become this big green moody monster? What is healthy in a relationship during pregnancy?

I’m going to my Aunts on Christmas day and all the family will be there, i will be 10 weeks pregnant and the only other person that knows is my husband.
I’m not wanting to tell anyone about my pregnancy until after my first scan, which is scheduled for early January.
How do i stop people “guessing” i’m pregnant when i can barely eat with morning sickness, feel really tired, and won’t be drinking.
How can i act “normal” ?