Do you think it's horrible that I told everybody I got a low but still higher than my actual grade on my uni's midterm
Why would you lie about that?
I had no choice. Two of my best friends came together last weekend and asked me how the midterm went. I saw no other way than to lie to them.
You should not lie to your friends. If you keep lying to them they might not trust you anymore.
It's not a big deal, who would think I would lie about something so stupid.
Well when your friends find out that you lie about small things like this they'll have a hard time trusting you with the big things. I'm sure you value their friendship, and you wouldn't want to ruin it over something so silly.