Hi, i've never used a question/answers website before, and i don't know if this is a good place to seek help about this, but here we go...

Hi, ever since i turned 13, (14 now) i've begun to feel very depressed and anxious... I don't know why, i've never taken drugs (And i will certainly NEVER do it). Sometimes i get this weird feeling in my body when walking home from school, it's like this weird feel, it's very hard to describe but i'll try; As when i walk it feels like my legs begin to disconnect from the ground, suddenly feels like i'm floating, but also that i feel like i'm gonna faint... I don't know what to do about it... And no, i do not have suicidal thoughts, i want to live my life fully. But i want it to be good. And no, no one has died in my family recently, but everyday i think about what i should do when my mom dies, i know it's a very strange and horrifying thought and i also have no idea how to get that away, I wish I did though..
Also heard that depression is different from gender to gender, I'm male.
I don't feel lonely just because i don't have a girlfriend, i'm not even interested in any girls nor guys.
I'm sorry if this is the wrong place to ask about this, i've never wanted to write about this online, but i just want it all to stop.

If you've read this; thank you, i really appreciate it. Perhaps you could leave an answer or atleast some tips?

P.S I also get this weird feeling of happiness suddenly, it lasts about 5/25 minutes, but after that i just feel like a trainwreck.