Please help! Confused on how far along I am

AS
First time mama here. Found out I was pregnant last week, and I'm so excited!! 💛 May 2nd my doctor said I was 5 weeks 1 day based on my last period of March 28. So we set an 8 week appointment for ultrasound. 
What I'm confused about (thanks to too much Google) is that I typically have a 33 day cycle, and don't ovulate until around cycle day 18, April 14. And based on my charts I'm pretty sure that's when we conceived. 
So am I really 5 weeks? Or not as far along since I ovulated later than normal ladies? 
Sorry in advance if this is a dumb newbie question 😊