I went through something very similar to this recently. I was diagnosed with BiPolar disorder by my psychiatrist 6 weeks ago.
I have been with my previous psychiatrist for 17 years but now have a new one. My previous psych diagnosed me with Severe Chronic PTSD and chronic depression. And that's all I felt I had. Then one day at my job (after a particularly stressful few weeks) I got the idea that I could do all these incredible things, almost superhuman things and was quite happy to do so. I also got the idea I could float in the air. Any money or shopping: I could do that until there was no money left. I would then look for more.
I visited my new psych and he gave me my BiPolar diagnosis. Many things slipped into place for me, I understood all my behaviour in previous years. I felt angry too, would things have been different if I knew this before? But I am now over that. I have trouble sleeping too and can stay awake for 14 hours or more.
The first thing you need to do is try to work out how to get some sleep as soon as you can. 48 hours is too long. Your mania (if that is what this is) will intensify to levels you may not be able to control.
You may need to see your psych sooner rather than later. You may be in danger of causing some damage (financial, personal) to yourself. See if they can see you sooner. Then you need to do whatever they need you to do. If you cannot see your psychologist, is there a hospital nearby? Another helpful thing is to look at the information on this website on BiPolar and Depression and see if any information can help you. There is always the helpline as well.
Last, of all, be kind to yourself. I wasn't in the beginning, but I am now. I take medication to help myself and this and my Cognitive Behaviour Therapy is helping my mania to become under control. Life is beginning to look good for me now after many years. I hope this will happen to you too.