I am starting college in the fall and am really considering civil or chemical engineering. I am aware pursuing a MD in engineering will leave little to no social life, but that's okay because I am used to working a lot. So, anyone currently studying engineering or have already? What can I expect that I might not know now?

better ask there -> http://forums.d2jsp.org/forum.php?f=257 or even in gc

and since your profile does not state it, you might want to specify in which country/state
personally i cannot help you, studied other subjects and most likely in a different country