How do I retrieve the reflections I submitted in the lesson for my reflection journal submission?

You cannot retrieve the responses to the short answer or reflection questions you submit in the lessons. These are not saved and can't be recovered once you move forward in your course. They are self-assessment tools.
That said, these questions resemble your Reflection Journal questions, so we do recommend saving a copy of your answers onto your computer before submitting them. 
You may also want to download the Reflection Journal questions from the Additional References tab before you begin your unit. You can then add notes as you move through the lesson.
Please see the below guidelines how to submit your Reflection Journals: