Hey! Sorry for taking so long to reply, hope you've had a good week!
With your course, I can understand experience can be an issue, perhaps doing some research for online courses you can join or people within the healthcare field that you can talk to virtually before making big decisions about dropping or starting a new course? That might help with giving you some direction for like your academic future - I wish I could be more specific and give you all the answers lol but unfortunately, idk loads about the healthcare field and also it's not something that's impossible for you to figure out with the proper resources.
Best of luck finding some hobbies to help your stress! And I pretty much try every genre of music I come across and it low key does depend on your mood. For me when I'm angry/ stressed, rock-rap so like Linkin Park, 5SOS vibes are good to like release angry energy, however, I'm fully aware this isn't for everyone, it's like a very loud type of music lol. But most of the time, the Chilled RnB and Neo-Soul x RnB playlists on Spotify are my go-to, oh and any Frank Ocean, Daniel Caesar, Arin Ray songs really calm me down if I have an anxiety attack or anything. But overall I'd just suggest finding whatever works for you then make those playlists easily accessible on whatever music app you use (literally mine are like named 'stressed' or 'deep breath') because if you're already mentally exhausted you don't want to be spending forever looking for music to calm you down.
I'm definitely not a professional, and I know that it's not healthy to self-diagnose because you can like trick yourself into having some negative mindset and blaming all your feelings on a mental health disorder - but, it does sound like you have been struggling to deal with changes for a while. Which is 100% normal! What you're experiencing could be symptoms of depression, but I can't make that judgment and I wouldn't advise you making that judgement either. I haven't sought professional help purely because I don't want to, but I haven't diagnosed myself, even though I know my mental state could do with some help, I've just tried to work on myself so I can be the best functioning human being possible! Reaching out to people can be hard work but sometimes really worth it, I talk to friends my age who are going through the same thing, as opposed to my family because I don't want them to worry - but again up to you. I also write a lot of my feelings down when I get confused (just in like locked notes on my phone) because sometimes explaining yourself to others can be difficult - you could give that a try.
Let me know if you vibe with any of my music suggestions haha, and also if you're doing ok