In the course of medical treatment about 25 million Americans have intravenous catheters placed each year. Serious complications are very uncommon, but problems can occur. These problems include infection, thrombosis (blood clot in the blood vessel), phlebitis (inflammation of the blood vessel), hematoma (blood clot in the tissues next to the blood vessel, emboli (small blood clots dislodged from the inside of the blood vessel), and infiltration (the catheter goes into the tissues next to the blood vessel). It is also possible for the needle to penetrate and injure a nerve, and for bruising and bleeding to irritate a nerve.
Because your current, persistent, problems are a bit worrying I would suggest you see a physician.
~~Kitt~~Moderator: Anxiety/Panic, Osteoarthritis, GERD/Heartburn and Heart/Cardiovascular Disease. www.healingwell.com"If you can't change the world, change your world"