Measuring ahead.

Hey y'all!

Has anyone measured ahead and ended up being further along?

My periods were a bit weird, i had one May 18, then again June 1. Found out i was pregnant July 1. I only took a test because i had been craving something i usually dont eat for a little over a week. And my test was a dye stealer, which ive never had before. Ive measured a little bit ahead at each ultrasound by about a week but since my 3rd trimester im a bit further ahead.

My last ultrasound at 31 weeks , babies head measured at 35 weeks and his body at 34 weeks. I dont have a history of big babies my first 2 were only 7lbs.

Is it possible i ovulated earlier and im actually further along or im just having a huge baby this time?