I was lying on my right side when suddenly I felt a sharp pain (that lasted just a second) in my right elbow pit/elbow crease. I looked down and my median cubical vein is a tad more blue and dominant than normal. There is also a sligh tenderness to the area when I run my finger over it, so I've just stopped touching it. Not sure what the issue is. Do you think I just slept on it funny?