I donated as usual last week and the machine messed up causing blood to get in the plasma bottle. Well anyways the lady said she would have to poke my other arm to return my blood.
Well the new arm that had the needle began hurting and my arm became very tight and big(Big like I am flexing). Well I told that fool lady and she told me to wait 5 more seconds so I did.
Well my arm hurts all the time now and I cant extend it straight. Some of the swelling has gone down but it is still slightly bigger than my other arm and it has began bruising.

Will the oxygen and pain eventually leave or do i need to see the doctor?