I am assuming that your doctor started you on the number 5 pen. I had nausea with this one after my evening meals. You really want to avoid anything high fat and overeating is nearly impossible unless you want to be sick the rest of the evening. Mine went away after about a week. Although after a month of the 5 he switched me to the 10 and that nausea was unbelievable. I went away after about 3 weeks and now I only have it after breakfast for a couple of hours...but I can certainly tolerate it. The results from this medication have been fantastic for me....my a1c went for 10.3 to 6.5 in 3 months, plus I have lost 30 pounds. If you can stick with it I'm sure you will be pleased.