Working mom

I wasn't expecting that I'm gonna be pregnant since I was on birth control so I took a lot of hours for this month at work. I'm on my 6th week but the fatigue is real! I feel like my energy is so low, and I always find catching my breath just by walking a few feet. I can feel my tummy & insides are stretching and I couldn't even describe the discomfort. I feel nauseous & bloated. I'm thinking of not working that much next month. My friends said I should take a week leave. But it think it'll just be the same. Anyone in the same boat?