Welcome to PC! I can totally relate to the writing obsessed manic state as I was there last October. It was exam and final assessment time for my Writing Degree and I went into orbit. I would spend hours and hours focused on writing an essay, thinking I was killing it, only to read over it the next day and find it was all over the place. So the process began again. The afternoon after my final exam I was admitted to hospital. I only became more agitated, delusional and psychotic. I was truly out of my mind, and so obsessive. It took a month to bring me back to reality. The hospitalisation was necessary for my safety due to mania and severe SI.

Somehow, you really need to put the brakes on this before it gets out of your control. Be willing to do whatever it takes; this is your life and reputation at stake here should it worsen. Do all you can to make it to your appointments as you really need some help right now. They can only force you into hospital if they think you are currently at risk of losing life or reputation. Most likely they will offer you the support you need right now. Please keep us updated.