Yes, you should certainly seak a physician about this. When you have sudden changes like this, it might be due to something neurological. It could of course be stress, but the headaches you get is a bit worrying, so to be sure, check it out. Do you have any kind of neurological diseases in your family (examples: parkinsons, huntingtons, eplilepsy etc)?

But hopefully it's just stress, and you only need a loooong holiday

Charlie