I'm not ready to take this to my family and friends, so that's why I came here... 
I've been feeling down for a long time now, I go through every day doing things with my friends normally, but once I'm alone, I start to feel really shitty, especially before I go to sleep. I've been diagnosed with depression a few years back, and I haven't treated it properly, but I have been wondering recently if there is more to it.
Sometimes I feel very energetic and talking (last week I had to focus on being quiet because I was getting stressed with the sound of my own voice), but sometimes I'm just sad or apathetic, for no reason.
I feel so hopeless sometimes, it's like I don't want to live anymore, and I've been thinking about suicide a lot, but then I just as soon as I join any of friends and we do something together I'm alright
I did some research and I have some bipolar symptoms, but it could just be my depression. 
I'm also a big dreamer you know,  I dream of becoming a great actor,  and I'm from Brazil so I'll have to put a lot of extra work into that, but even wanting and believing in it so much, I still feel hopeless every night, thinking I'll never do it. 
What do you think??? Do I have any level of bipolar???