Hi Gina,
If you make it through your meal and a few hours out and no nausea, you've escaped the "Lizard Bite" (which is a good thing). However, a lot of people don't get the nausea at 5mcg and do at 10mcg so we'll have to see. What happens with your meds depends on what Byetta does for your numbers. I was on the same meds you are and when I got to 10mcg I was intially able to get rid of all my meds. Im back on small doses of the same ones you are taking just to keep my BS nice and low, but my dose is nowehere near the MAX dose I was taking before the Byetta. (eg. today after breakfast, 10mcg Byetta, 2mg avandia and 500 metformin and 2.5mg Glucotrol my BS was 61 so I defintely used too many meds)
Typically you won't see a real reduction in your meds until you move up the line next month to 10mcg., but everyone is different.
Use the 31g 3/16's inch needles and your injections will be for the most part "pain free".
Warren