I was practicing IV skills with a classmate, and I attempted to insert an IV. Everything went pretty good in the beginning from what I could tell. I went into the vein at about a 15 degree angle, got blood return, advanced just a little more, then advanced my catheter. But then I noticed that the skin around the area started swelling. I feel like I did everything correctly, and then that happened and it kind of scared me and lowered my self esteem. Does this sound like I blew the vein, or does this just happen to people?