It’ll, be going in, please don’t worry. Them;title,drop that appears at the end of the needle is quite normal, it’s due to the pressure within the needle being a little higher than the surrounding air when you take it out of your body.
Are you doing an air shot before injecting? The little squirt of a couple of units into the air before you do your injection? That ,ales sure the needle is primed and ready to go. The pens are super accurate, so you’ll be getting the right dose.