I have heard some negative things about the shot. Like it can take a lot longer to get pregnant once you get off of it then it would if you were on say, the pill.
Definitely do .N.O.T get the patch. It has a ton of lawsuits against it for an excessive amount of strokes, heart attacks, etc. It is also not very effective at preventing pregnancy. This is because all of the hormones are released too quickly in the first few days, leaving almost no protection for the end of the week.