So I did something today, and I completely have no idea if it was a mortal sin, I know what the three things are that make a sin mortal, and completely have no idea if it is one.
There was a month-old water bottle in my room, and I dumped like half of it out down the sink. And for whatever reason, I felt really bad about it as soon as I did it. I thought being wasteful was a mortal sin, but I don’t remember thinking before doing this “if I pour this out, I will sin mortally”. I think I recognized I was being wasteful and it may have been a bad thing, but I don’t believe that I realized it was a grave act, if it even was a grave act, which I don’t know either. I don’t even know if I’ve sinned at all, even venial.
I had my first confession last week, so I think I may be over-reacting to anything I do as some sort of guilt-trigger mechanism, and writing it out now I kind of think it’s silly, but would you people on the forum recommend I absolutely go to confession again before my first communion?