First Trimester Symptoms

I’m 6 weeks today and I’ve had 0 nausea nor fatigue. My sister is also pregnant but she’s 31 weeks. She said hers started at 7 weeks and it was SO bad my mom had to come live with her for 6 weeks because it was extremely debilitating. I’m talking 3-4 times a day throwing up, all day gagging, and nausea through each night. I’d like to pretend and think that I am special and I won’t get these symptoms🤣. What week did you get these symptoms if any?