First you should have the number of your psychiatrist.
Just because you need a medication change doesn't me you have to be inpatient to do so.

You up and down eating issues need to be addressed, it could just be a side effect of your medications.

There are so many different medications that can help balance you out, Don't lose hope.

Meanwhile try to do some yoga, meditation,breathing exercises to help calm your body down.

Please do get in touch with your Doctor.