New PICC line, and I'm not sure if it's healing well?

I had a PICC put in Wednesday, and it's my first. First: the spot where the line enters my arm is red and sore. It got better the 2nd day, but is pretty sore now. Is this normal 4 days later? Also, the hole where the line enters is a yellow-ish color. Is this a sign of pus/infection, or normal healing? Finally, my line slides in and out of my arm as I bend and move (causing pain). Is this normal (the moving, and the pain with the slight line sliding)? I'd appreciate any insight from either someone who's had a PICC, or a nurse/home health care aide who is familiar with care. I can deal with the pain if it's normal, but I want to take care of it well. Thanks!