Is this normal? I’m only 4 weeks

This is my first pregnancy so it’s all new for me!

Right now I am having really bad bloat everyday and I am super tired. I’m falling asleep on the couch hours before I normally go to bed.

In addition, tonight I went to eat mussels (I normally love them) and I almost threw up the taste and smell was so horrible.

Is this normal for being only 4 weeks or is it all in my head?