my first degree was in engineering… but i never worked a second in the world of engineering. i had a 20 year career as a trader on wall street. engineering gave me skills that nothing else can match. relax, just choose the field that appeals most to you. by the time you are a senior, things will be clearer. no need to freak out right now. engineering also makes you very analytical and mathematically super-real-life-proficient (yup i just coined that phrase like gen. aladeen in the great dictator).
65% of my MBA class were engineers so obviously all of us decided we needed a change and got it done. Life is long. Just acquire knowledge, skills, connections and make the switch when it feels appropriate not panicked.