10 weeks and no morning sickness? normal?

Hi, hoping that someone can reassure me....I am currently 10 weeks pregnant with my first baby (also first pregnancy) and I am worried as I haven't had any morning sickness at all! I've been really tired and I've had sore boobs but that's it! Haven't had any scans or ultrasounds yet, my first one will be in the next few weeks, My friend who is 6 days in front of me has been on and off sick for weeks to the point of having time off work! My app says my sickness should be at its worst this week but I've had nothing! I can't ask anyone I m ow as we are not telling people until I've had my can! Please help! Thanks xx