It's a pinhole!
Just got home and shined a light on it. It's right at the top of the shutter which I guess translates to the bottom of the negative. I hadn't thought of the pinhole idea so I'm glad I posted this, thanks everyone!
I'm going to head to Home Depot and try to get some liquid electrical tape cause I heard it works. The camera had a CLA before I bought it about a year and a half ago so I'd rather not send it for a replacement curtain.
What's likely to have caused the hole? I don't use a lens cap but it seems strange that it would burn a tiny hole so far in the top, I also try to keep the lens wide open.
Thanks again, sorry if this ended up in the wrong sub forum, I didn't realize it was going to be more about my Leica then film or processing.