While showering I noticed a hard object between my gluts. It looked semi transpearent, much like a single section of a fish sleleton, semi clear. It clearly came from inside me, when I squeezed it, it more or less popped, and it really stunk. Size, approximately 2mm. I do eat sardines but haven't had any since the middle of last week. I have noticed these hard little lumps while washing for about the last year, but this is the first time I've looked at one. Need for concern or just stop eating sardines? I had hamburger yesterday, some potatoe salad, water, soda and coffee, that's about it yesterday.