Suggest Treatment For Pain In Forearm Due To IV Injection

Hi, I was in the hospital for a week and had an iv for four days in the same place, i have been out now for five day. i noticed pain in my hand a couple of days ago, it has increased to include ,my entire forearm and i noticed yesterday that it follows my vein from the Iv site up and down my arm, its getting to the point where i am having trouble using it.