Depo shot HELP!

Zo
Three months ago my sister gave me the depo shot and now its three months later and my mom just gave it to me and unlike my sister she didn't really know what she was doing. We watched videos on how to do it and she thought she had the hang of it. She inserted the needle and injected the hormone but when she pulled it out she didn't hold it down for a couple seconds so some of it leaked out along with some blood and in a panic she pressed it down with her finger 🙄 i just wanna know if the shot is still going to work since some leaked out and if its gonna get infected or anything because she used her finger to press it down.