What’s wrong with me!

Hello, I am a 22 year old female, I work as a lifeguard and I have just completed my nursing diploma. I train with a triathlon team in pursue of becoming an Olympic athlete one day.

For the past few months-year I’ve been experiencing things that I have been finding hard to cope with. I have started to lose interest in the sport that I have been extremely passionate about for years. I have also lost interest in my career as a nurse and I don’t want to become employed as a nurse but my parents payed for all of my education (I feel blessed) and I don’t have the heart to tell them I don’t want to work as a nurse. I have picked up a horrible habit of trying to make myself sick for no apparent reason. This includes losing as much weight as possible in a very unhealthy way, I have began to self harm myself on my hips via cutting and burning, I often take way too many sleeping pills hoping that it might cause me to become sick, I feel very lonely and as if I can’t talk to anyone about this, whenever I do go out with my friends and family, I pretend there’s nothing wrong with me even when prompted. I have spoken to a medical professional about my issues but I feel she gave me the wrong diagnosis (depression and anxiety) as well as the wrong solution (depression pills to which I stopped taking after 2 months because nothing was changing). I become extremely anxious in social situations because I feel like I always need to impress people and I don’t know how to be myself around others. I do get social anxiety and HATE making new friends yet when I’m surrounded with few of my friends I don’t mind speaking to strangers.

I know this is a lot and I know you probably think “oh she’s just some bitchy girl who’s just trying to get attention” but I can tell you that I am honestly just confused about what’s going on with me and I would just like someone to explain to me what might be happening. Thanks for taking the time to read my question/concern! Please let me know if you can help, it would be greatly appreciated!