Really confused.

Mariah • Stay at home Mommy to a handsom almost 2yr old! Wife of almost 5yrs!
I really don't know how far along I am. So many apps and websites are adding different things. My last period was April 13th. But I didn't ovulate until May 1st. So some things say I'm five while others say I'm only 3. My period was due for May 15th, I started getting positives on May 12th so before my missed period. What do you ladies think?