Don't feel too bad about it. I hope you are well soon. At least you have first hand experience about the value of knife safety now. It would have been much worse if it happened while instructing someone in knife safety (it happened to my father and I learned that it wasn't as funny as thought in the first place).
I got my share of cuts too. On separate occasions I severed the nerve of one little finger and the tendon of the other. On both occasions the physician admired the precision and smoothness of the cut which he took as a sign of a really sharp blade (back then it was a little awkward).
The lesson I learned (in addition to "knife safety is important") was that physicians fail to like patient who already diagnosed themselves. They like it even less when you tell that the scratch wouldn't have been enough to come if wasn't for the acrual damage of important parts.
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If it isn´t broken, it doesn´t have enough features yet.