"Blood test issue"

I have had blood tests here before with no issues in the past, but the latest one I knew was an issue immediately as my upper arm was stinging and tingling afterwards and my bicep became very sore and painful shortly afterwards. My arm subsequently became swollen and bruised, the swelling has reduced but the bruising is now severe and has now spread all around the elbow and mid arm on both sides of my arm and my bicep is still numb and uncomfortable a week later particularly when typing and has a continual dull ache. I am concerned that a nerve was damaged and have no idea how long it will be before my arm is back to normal in feeling and aesthetics. It is extremely annoying and has put me off having blood taken again.