So your question is tough to answer with your background because you don't really have any relevant experience.
First I think you need to find out if you enjoy basic programming. go to codeacadamy.com and try the python tutorials. If you like it, great, engineering or comp sci might be right for you. If you don't like programming, that may be a sign that comp sci isn't a real area of interest, but engineering might be.
So aerospace engineering has quite a few fields. A lot of it can actually involve computer programing (simulating or modeling systems, as well as wiring the code for the systems). with aerospace engineering you can get into thermodynamics, fluids (air over a wing is a fluid), control systems, materials, etc.
with something like comp science, you can end up as a web developer, writing code for embedded application (anything from toasters to airplane controls), desinging operating systems, machine learning, the more IT side and get into cyber security, the list is huge.
You can try going to MIT open courseware and check out the intro classes and see what they do and if it interests you.