Babe, I’m not going to publish the other parts of your message because there are a lot of personal details in them and I want you to stay safe. Just hear this: you need to speak to a mental health professional to help you work through the anguish you’re dealing with. You mentioned that you worry about your problems not being “serious enough” to talk to a doc about them, but that’s just not the case. Your problems and anxieties are bothering you to the point of impairing your functioning and seriously affecting your emotional and mental state so some professional help is definitely warranted, even if you feel like a fraud.
Incidentally, a friend of mine just posted about this today: there’s a new 24/7 mental health resource for post-secondary students in Ontario. Their website is good2talk.ca and their number is 1-866-925-5454. Try giving them a call, or see a counselor at your school, or ask your main doc for a referral. Don’t ever be ashamed to seek out help. These people are trained to help people like you; it is their job and their purpose. You don’t need to feel ashamed or embarrassed about asking for help and getting it.