Late, light and short period.. pregnant??

I was due for AF on 2/21, did not bleed until the afternoon of 2/25. It was brown, and very light. I used light tampons, and slept with a panty liner and no tampon, and woke up with no blood on the liner.

I used two light tampons on 2/26, but did not use anything after about 2:00. Since then, I have had no bleeding. So, I bled for about a day and a half.. and didn’t have any of my typical period symptoms.

I took a pregnancy test on the morning of 2/25 and got a bfn.

Has anybody had this happen and ended up being pregnant??