Tooth extraction; help

I had an extraction two days ago, due to likely infection. Since extraction I feel less unwell- but have immense amounts of pain. I know how to take general care of my tooth after the extraction- but I can’t open my jaw properly and it’s only getting more so painful to do so. I have been prescribed codeine 30mg, and am taking regular paracetamol (as I cannot have NSAIDs). I have also been prescribed an antiseptic mouthwash, using salt rinse and an anti-nausea as the pain is so strong it makes me nauseous. Is there anything anyone can suggest that helps with the swelling and bruising around my jaw? The pain of the actual extraction site is moderate and manageable but the jaw and face aching is very severe- I can’t open my mouth to fit a spoon or fork in, I can just barely use a straw but with quite a large amount of pain, and I can barely talk or swallow without the pain increasing dramatically. Thanks in advance!