You brought up starfishs in the first place.
edit, IM PISSING BLOOD!
It could be that:
A) You irritated your urinary tract, where it goes through the snake, due to compressing it, etc. Glass is rather hard.
B) There is a serious problem and the cut is that deep.
If it was B, if the gash is small, and you've disinfected it and it is bandaged well, and I mean well, then you may get away with it. All a hospital could offer is stitches, and these leave scars etc, and are not needed for small cuts.
If A, then don't worry.
If it is a rather large gash, then it's your call.
Stitches would be appropriate, and embarrassment would be had.
Pics of the jar or you had a man-period.
He did, read a few pages back.