Which dates would you ladies go by…

Alyssa

Okay so the time line looks like this

Period due june 4-7/8th (very short since removing IUD)

Positive pregnancy test May 29th

Started bleeding on June 3rd -6/7th (Very Heavy/ Chemical)

Levels tested 1miu so not pregnant on June 15th

Got a positive test on July 3rd vvfl but positive pregnancy test

July 20th my levels were 9,127 (Definitely a new pregnancy)

So with all this being said should I just say my period was the 3-8th on here because I’m not exactly sure when I ovulated and my doctor said since it was probably a chemical my body probably was returning to a period the 3rd-6/7th of July like a normal period would you count that as a last period since conceiving or start from the 15th?