Rapid cycling bipolar or extreme mood swings?

I know what you are abou to say, talk to a therapist or a health professional, and they can help you, but my therapist is always busy, and I am extremely impatient and I can't wait until the next appointment. I would also like to add that I kbnow this isn' a diagnosis, but I just want clarity.

Why I think I might be bipolar
Firstly, I have these extreme extreme mood swings, that happen every few days. One period, I will feel good, not think about my awful thoughts, I feel like I will finally be happy, and like I am one of the best people in the world. I also feel like every skill I have is something only I have. I will also feel like I have the best friends ever. Then a few days or hours later, something small happens, and I feel like I am worth nothing anymore, like I am one of the worst people in the world and am worthless, and no one will miss me when I'm gone, and that my friends don't care about me.

When I have these awful thoughts, I want to talk to my therapist about it, but most of the time, the next appointment is in a week. I try to memorise all the bad stuff and all my worries that I have at that moment, but once I am back to my happier phase, I don't care anymore about what I wrote down, I just tell myself that all of what I wrote down isn't true, and because I don't want to think about it. So then when I finally speak to my therapist, it's always about a different topic, because I feel like the topic isn't relevant anymore, because I feel COMPLETELY different.

When I am in a happy phase, I feel like I need the therapy, and that I will get out of this awful mess. I also feel like I am super close to being permanently happy again. Once I am back to my depression period, I feel like therapy will never work out, and nothing will get me out of it. When I am in a happy phase, and I go to my therapist, I just start laughing with my own issues and problems when we talk about it, until halfway the session, and then I start to get serious.

Why I think I might not be bipolar
This is only one simple reason, and that is because my mood swings are SO frequent. They can happen in a span of a few days, sometimes even less.

So what do you think about it? I am super impatient, and don't want to wait until my next appointment in 2-3 weeks. Might I be bipolar? Thanks in advance!