I am very nervious when it comes to doing my shots but i am willing to try it. I been reading a lot of info on it. Now when aspirating is this correct ? You put the needle in (all the way in my case 1" needle) i have a lot of muscle on my tights. Now when the needle is in , you pull back on the plunger (sucking stuff in) to make sure that no blood enters the needle. If blood enters pull oput and try again, if small air bubbles comes in then inject. Is that correct ?? Just want to be sure , im a first timer.