I have something on the back of my neck I'm afraid it's a tumor or something. Basically it started about a week ago, I noticed a small lump on the back left side of my neck. I thought it was a blind pimple. Around the time I noticed it I would find my right thigh would start to tingle uncomfortably when I would lay down, I'd noticed especially when trying to fall asleep. Over this past week the lump has grown, where it's now about an inch and a half, maybe two inches big. It's become noticeable to other people when I wear a shirt with no collar. The lump is hard and solid, and extremely sore. The pain from it radiates through my whole neck if any pressure is put on it, or when I turn my head to the side or up and down. I'm hoping this is just some kind of cyst and nothing serious. I'm going to the walk in tomorrow if I have time before my classes. Anyone ever had something like this?