Can someone help explain?

Erica

So I'm pregnant and i thought I was further and so did my Dr until we did an ultrasound and he told me I was 5 weeks. That was on Tuesday.

My LMP was September 11 and I got a vvvvvvvvvvvvvfl October 22 and it kept getting darker and darker over the next week

I also wanna see if I can guess when I ovulated ??