Stomach aches after step 2

I didn't have stomach pain or discomfort, but I had other issues. I was very weak, and dizzy. My blood pressure was always very low. My output was so frequent, I wouldn't eat just to avoid dealing with it. I remember toward the end of the 8 weeks, I was literally counting down the days.

I didn't have a step 2 surgery, but after my colectomy (your step 1), I had a lot of stomach pain that worsened with eating, as you described. I don't know if your surgery was laparoscopic but mine was and I felt that that may have worsened it, as I was filled with gas still, which didn't help.
I had literally no appetite for a good month after surgery, but I was in my parents house for recovery, so my mother made sure I ate little and regularly (I don't think I would have eaten if it wasn't for her just handing me things so often!). It took a long time for me to be able to eat normal sized portions without having pain & discomfort after, but it did get better. I think just try and eat small amounts as much as you can, even a slice of toast, then an hour or two later, some chicken or eggs or something that doesn't need a lot of digesting, and keep trying. Step two would require more handling of your insides than step 1, which is probably why they hurt much more now!