"lost" feeling, weird scary feeling, dont know whats wrong with me.?

ok, for those of you that can't read alot you may want to leave now. Ok, it all started back in october and november when i would get these moments of not feeling like i'm here, otherwise known as "brain fog". it usually would occur at night every so often. I had this same thing years before but it started occuring more frequently in october and november, maybe 3 or 4 times a month. It really wasn't a problem till' it started occuring every day. for about 2 months, november and december, it was there from the moment i woke up to the moment i went to bed. for some reason, it started to go away in late december early january. Now, for some reason when i went to school, i'm 14, i was 13 when this started, in mid january i was in my first class. All of a sudden something came over me everything started going black and everything looked tilted to the left.this was really scary, i actually started crying, and i'm a boy. when i would walk my steps would feel like the floor was sinking and it was just really bad. The severity of this went away, but everything still looked tilted to the left and occasionally the floor would feel like it's sinking. about, oh late march early april that went away and then i felt the same as i do now in late june. really weird feeling, if i step to the left, everything feels like it's moving to the left, step to the right, everything moves to the right. everything always seems to be moving ever so slightly, not enough to really bother me, but more of a nuisance. i also have these feelings that come and go that make me feel like i'm not here and i'm in a different area even though i know that i am here. i can speak perfectly but when i say it it doesn't feel like im actually saying it. i don't know its really weird. i feel extremely paranoid too and i all of a sudden get spooked out and when i'll go outside i feel like i know where i am, but i don't at the same time. my head feels really weird and stuffed, i can tell when it's really stuffed and sometimes it "drains" i guess, and i feel almost normal, i don't have that "lost" feeling, but then it gets congested again and it comes back. i did go to the doctor's in january after the really bad floor moving feeling hadn't gone away and they took a finger prick and everything came back perfectly normal. they said if it keeps happening, come back. it had stopped the next day and never came back as badly where i never felt the need to go to the doctors again. now i just feel like i stated above, the "lost" feeling. it comes and goes, but most of the time is there. i just want a cure for it and be done with it. all i can keep thinking about is it. i also have been very stressed out at school this year, actually in danger of staying back and i was always on edge, but school was just let out today and i feel a little better but not too much. please please please if anyone has any advice or tips on what to do that would be greatly appreciated.thanks for taking your time to read that, i know its alot but i really want to know whats wrong with me.