Bug bite allergy?

Does this look like an insect bite allergy? It is a huge welt that wraps around half of my lower arm and is causing me quite extreme wrist and elbow pain. I have no idea where ot came from, i woke up with it about 2 days ago and it is just getting more and more swollen even though ive kept a cold compress and used a bug bite cream. If this is an allergy should i go to the doctor or is there nothing they can do?