Hey, should be fine bro. I have done similar, and still got the same results from prevous vials. Next time pin at an angle and let it drible down the side.
Side effects most people will feel from igf-1 is insulin sensitvity, and lethargy.
If you never feel any sides, then something may be wrong, but then again everyone reacts differerntly. Personally i almost always get lathergic from igf-1.