I continued his fasting and did a couple more epsom salt baths, as well as give him a couple freeze-dried shrimp every once in a while.
Just for good measure, I e-mailed my Biology professor. I eventually got handed over to a Toxocology grad student here at my school and I described his paleness, slight bloating (but it had gone down since then) and awkward swimming at one point. He told me it was probably an elecrolyte imbalance, in which case I would have to euthanize him because it was very painful to him. But he said he would take a look at him.
So I took him to the graduate student and he takes a look at him, asks me a couple questions, to which he says, "Well, three pellets twice a day is a little much. But I guess this coloring is just how he is. Maybe he's a little fat. But yeah, he looks fine!"
I am super happy that he's not going to have to be euthanized. I'm glad he's all better, thanks to you guys! I really appreciate it!! I guess my fish will just have to shed a few pounds...Hahaha. :)