I called to schedule the appointment to see the GI doctor, and they had a cancellation for today at 2:30. Thank goodness. It was too late for John to request the day off, so I have to take both kids to the appointment. Porgie is terrified of doctors and usually screams her little head off. I am praying that she behaves during the appointment.
Thank you for all the advice. Mojavi, Karla, and Mama Kalila suggested that it might be a foremilk/hindmilk issue. However, Izzy has been nursing at one side per feeding for about 2 months now. He did this on his own, and I assumed it was because I had a large supply of breastmilk. So, I don't think it is a foremilk/hindmilk issue. But thank you for the advice.
I am off to get everything ready before nap time, because as soon as Porgie wakes up, we are going to have to rush to the appointment. I'll keep you guys updated.