lol You're not the brightest star in the sky.
Sorry, I couldn't resist.
I understand what you're saying. Perhaps a small cloud obscured it for a few moments or it could have been a UFO. Or, maybe it was the ISS catching light reflected back from earth and for whatever reason the light stopped reflecting because of angle or light source. I think that the ISS can appear to stay in one spot if they're are in our orbit, like the moon appears to be stationary when in fact it slowly moving across the sky while in our orbit. It might have been another satellite stuck in our orbit or anything else that can reflect light. I just don't think it was a star. I am by far not a science nerd or an astrology nerd. I hope that you get an answer though. Good luck.