I can see from some of your other posts around the web that you're heart is really in it, so don't give up on diving unless you've given it your best shot. I would strongly suggest working with an instructor one-on-one in private lessons if you're committed to completing your certification. I'm sure there are Instructors all around Chicago that could make this happen for you. Problably a few reading this post right now.
How was your pain in the shallow end of the pool compared to the deep end?
How was your pain in the shallow end of the pool compared to the deep end?