Welcome Jaina,
Most everyone who finds their way here has a lot of fear, and a fair amount of pain. I know I did. Congratulations on being in your last term of school, It took me a couple of decades longer than you to finally close the door on that one.
Transition is a huge set of decisions, changes, feelings, and usually some loss. I pretty much always advise talking to a counselor. It doesn't solve everything, but might help you on your path. Then Breathe! You are in a safe space, and people will answer your questions, or just chat if that is what you need to get through the night.
Losing someone you care for hurts. It doesn't matter why, it just hurts. I know that for sure, and there isn't anything for it but to try to do the next indicated thing and get through the next day. I try to do something for someone else for fun and for free when I'm really desperate, even if it is just to be here and listen to what other souls have to say.
Good luck and Blessings
Julie