I understand what you mean about making turns. It's harder to do in small apartments/houses. Go slow... be careful

I know you think you should be exercising, but I don't think the bike is a good idea right now since your balance is off. A fall of of that could cause a significant injury. I think it's best to wait for a PT to come. Hopefully he/she will help you with your balance

I'm so sorry that you are at the point of tears, but can't cry (I can't cry either)

I hope that things start to come together and you will get some of that help that was promised to you soon