Hi, I'd like to help you with your question.
Has your psychiatrist or therapist referred you to your family doctor? It sounds like you might need to be physically cleared before you can consider these symptoms to be related to your diagnosis.
It could very well be your medication. Has your treatment team considered that you may be having interaction problems with your medication? Each person is different in how they react to an individual medicine. And your reactions can change over time. The fact that you are taking 10 medications means there may be an interaction between the medicines or that you are reacting to one or more of them.
There are some anxiety symptoms that are similar to what you are experiencing. Many people who suffer from anxiety describe odd sensations and perceptions related to their diagnosis. This would address your symptoms such as suddenly feeling smaller and the sensations of moving around you. Balance is sometimes affected as well.
Try your family doctor first. You may need to see neurologist to rule out any problems with your nervous system, especially regarding your memory problems. If you are cleared, have your psychiatrist work with you on changing your medicine. If that doesn't work, most likely your symptoms are related to your diagnosis. Your therapist can then work with you to address how you feel.
I hope this has helped you,Kate