Hey Dan! Congrats on finally being able to meet with your doc soon. I can't say whether I'd tell my parents or what, but if you were me, you wouldn't. See, if your doctor sees the need, he'll refer you to a psychiatrist, and with them you will be evaluated, and your treatment will be sought. Whether it be medication/therapy or both, it all depends on your diagnosis. Your GP is not going to diagnose you. Well, with the basic "depression". But to me, yours sounds more than that. And if he/she does decide to place you on anti depressants, you'll really be able to tell if you are bipolar, and it's not a really good way to find out, because you could get extremely manic. So, hopefully you'll be referred.
I was hospitalized, diagnosed, and I let a few months go by before I told my parents. Ya know, my mom is actually bipolar herself, but I kind of felt ashamed? I'm not sure why, but I didn't want people to think I was "Crazy" or anything, ya know? It's not just me that feels that way. Mom knew I was seeing a psych, but didn't know anything about medication, etc, etc. Also, she doesn't know I was hospitalized for 9 days. We were arguing during that period, so it was normal for us not to talk for a few weeks. hehe. I think I'll tell her later, when I feel the need, if ever.
The only way your doctor will have you committed, is if you pose an immediate danger to yourself, or others. So, stay calm, cool, and collected, hehe. And don't worry man, you shouldn't have to feel the way you do about this situation, it's not worth it. I mean, I felt the same way I think, I was very nervous, and didn't know how to sneak around the situation. Even talking to the doc was crazy, because I didn't know what to be honest about, without being put away. But everything will work out. If you need to be detained, then so be it, there's a reason. And from there, things should get better, whatever you're treatment may be.
If you have any more questions about this stuff, you can always email me: [edit for personal contact information] there might be something you don't want to talk about in "public".. Let me know man, I'm here.
-Andrew