How does it work ???

Maria

How does pregnancy weeks and days work ? Lol might be a dumb question but right now my app says I’m 5 weeks and 5 days. So will I go up to 5 weeks and 7 days and then be 6 weeks pregnant? Or does go to 5 weeks and 10 days then I’ll be 6 weeks pregnant lol I’m asking because I saw someone say they’re 5 weeks and 9 days pregnant and it confused the hell out of me lol