I Went To The ER About A Week Ago. An

I went to the ER about a week ago. An IV was put into my wrist, while it had been on I noticed some pain but I didn't think much of it. For the past couple days though, I've had pain about 2 inches from where the needle had been inserted and there is a ball like feeling when I touch it. It also hurts, almost like a bruise where the ball seems to be.