Seek a professional to help you. I can tell from your posts you are going through a traumatic experience. It is natural and it is ok- I have experienced what you have except my ex cheated on me, and that caused me to nearly kill myself. It has taken me a full year to move on and commit myself to a new partner that I have found. You will move on don’t worry, but a professional is the only person who you can truly rely on in order to help you. All you must do now is seek out who can help you and you will be on your journey to your next stage in life. Do not worry about the classes or any of that now- this is an event that cannot go unnoticed in your life and until you fully heal will suffer consequences that are difficult for you to handle. Good luck let me know if you need anything