One day period?

Ok so last month the app says ( which I know isn’t always right ) that I was suppose to ovulate the 25. I had unprotected sex the 27.

That was last month.

This month I got my period late at it was only one day. I usually get my periods for about 4 days and well this time I only got it one day it was a bit lighter and the rest it was only brown discharge with a little tiny bit of blood.

(TMI sorry)

So I took a test just in case the next day which was the 9 and negative no evap nothing .

And I take one yesterday and again negative but I felt like you could see something but I took it as a negative since you weren’t able to see it clearly. This morning I look at it again because I was going to toss it and I look at it and you could see 2 lines. Which I know could be a Evap, but it just has me thinking…

Has anyone gone through this and been pregnant?? Or not ??