I am sorry that you are in so much pain.
It is high time that you go and see a doctor, particularly since the pain has gotten worse. In the meantime I would just ice it to try to calm it down and get some degree of relief.
Hope you will be better soon.
I agree with Karin – you definitely should get that checked out. Two weeks is pretty long & the fact that it has gotten worse is not a great sign. I had a similar injury and it turned out to be a pinched nerve. In the meantime, I would ice it down & avoid anything that aggravates it (besides breathing!). Good luck Jennifer – I hope it calms down soon for you. Make that appointment!