For your health problems, I studied with buddhism and they help to observe everything in my life. The first thing is to observe our emotion, our feeling inside, but after some months of this I noticed that every physical pain I had were because of some emotion that I never looked. We observe that most of the time headeach are due to all the control we have with what is happening in our life. Because you didn't look the control you have in your life, this experience became denser and denser and now it affetcs your physical body.
Your soul is trying to tell you something about your studies. What was the Real reason why you studied that hard? Were you afraid of something, was it for someone else? this kind of question. When you find why, take a deep breath and accept the feeling that you tried to hide with your studies. After that, you will feel better.
