Ask HN: Not getting anywhere in my major, make the switch to Computer Science?

Hey everyone, I'm in a situation right now that I feel is just disappointing for me. I'm currently majoring in Bioengineering and while I thought it was going to be interesting to me I discovered that my real interest lies in Computer Science (algorithms, hardware and software interaction,and the mathematics behind programming all the way down to the circuit board). I just don't have any interest in my current major but I'm concerned that by being a Junior in college I've missed many chances to have made the switch earlier. I want to learn and make my life meaningful and I don't think that's going to happen with Bioengineering. I feel I would have a better background in Computer Science and branch out, if I wanted to, in Machine Learning and actually solve problems with the knowledge that I have gained in my undergraduate career. I just feel that there is something waiting for me out there and I just need to make the jump to get out of this depression that I'm in. So much of the world revolves around code and that is something I find deeply interesting after having been exposed to it by some undergraduate teaching assistants who have a background in Computer Engineering and Computer Science.<p>Anyone have any general advice for me?<p>Oh and if the financial situation concerns you, I'm lucky that New York State has supported me with grants that I'm not paying anything to go to college (except for the summer class that I took a while back) so money is not a big concern on my end.