Has anyone gotten a BFP the day before AF?

The Little Mermaid
My temp is slightly elevated. It was around 99 like 3 days ago and now it's not going under 98.3. I'm normally 97.7... but now you can actually feel my skin is very warm but I'm not sick with anything like the flu or cold. My AF is due tomorrow and I'm on cd 26... I don't know what's going on really... I just don't feel myself right now. Should I test even though I'm not TTC?? I've been using the pull out method for a while but I known some people who've got pregnant with pre cum... That hasn't happened to me in 6 years that we've used the pull out method.