@karenw9 studies were done using the abdomen but I saw a chart online of injection sites that include the thigh.

My daughter had type 1 diabetes and we were trained to use abdomen for insulin if results were needed quickly because absorption is better there. But otherwise thigh is fine.

I am also small. I inject pretty far to the left or right by pinching up whatever I can grab!

Some doctors and nurses will tell you thigh is okay but they are also often bound by studies. Nevertheless, ask your doc or pharmacist!