Anyone get pain running up front left side of neck up to top of head, back of head. Don't remember if it went to top of head first or lower back of head. Felt like tightness, cramping pain. Thought I was having a stroke. Took my natto k (sticky blood deterrent ) enzyme immediately as I was late on taking it. Pain went away. Later that night, I got a terrible cramp in my hamstring. Husband says not related probably. Wonder if it is some sort of mineral problem. Took magnesium, potassium. Next day hamstring a little tight still. I did notice I was getting sleepy leg problems before I got tightness in my hamstring.