Does this happen to anyone else? I just injected DS with his Lantus. Butt site. I did everything according to the book: Light pinch, insert needle, administer dose, release pinch, wait 10 seconds, pull out. Once the needle is out, a drop of clear liquid leaks out of his skin, supposedly the insulin. Great! Now I have no idea how much, if any, Lantus he got. What am I doing wrong?