Confused So I Post In Here to Ease My Mind.

Ok, i'm not sure if I have just plain anxiety or bipolar and anxiety. I'll go through a run through of my past year:

i started college recently, at first I wen through a irrational depression so I was withdrawn. As time when one I had a few friends that would try to get to know me. Around january. She told me how she knows nothing about me, I felt very passive and unable to explain to her. It was slightly common for me.
When I go home, I have friends that I love and I talk to. I can meet new people and love doing it, usually with no problem. I would over analyze situations; like when she wondered why I acted very distant, I would become oddly nervous and say jokes to people around me, to distinguish and awkward feelings I have. Latley, i've been going through weird moments of being really happy, or acting happy and feeling slightly empty. I will make constant jokes and feel on top of the world, however, I will over analyze a situation and become randomly upset. I was feeling quite ok recently, then when I was with a few friend I started to become slightly withdrawn torwards the night. I was on three hours of sleep and slightly inebriated but basically fine. Well, while flirithing; this girl would lay her head o n me and I would feel heart palpitations and felt slightly surreal. I couldn't help it....After ruining a moment with the two of us I felt really upset-thinking I will never get a chance ot fix it. Every hour or two, i'll feel upset or i'll start thinking of ways to fix the problem to alleive myself. I often try to find what's wrong and I soon become lethargic and don't care at those moments, regarding the situation. It's very hard for me to write what I feel, because I feel like it's not fully explaining it. I guess i'll lastly say that i'm not stressed by school work at all, I can't sleep and feel very tired when awake, sometimes I can feel very energetic on little sleep. I feel that I can feel happy one moment then feel down about something the next but i'm unsure if that's a distinction of bipolar or just anxiety and occasianol unhappiness. Explain something to me to ease my curiousity until i'm able to see a doctor for a true diagnosis.

-i have great and horrible friend making skills.