What Are The Side Effects Of Zyprexa 5mg And Risperidone 2mg?

I had been on zyprexa 5mg for sometime.My doctor is now prescribing risperidone 2mg at bedtime.I have been on it for 3 days.I am not sleeping as well as I did on the zyprexa .I am waking up with a headache and my ears are ringing for an hour or so and I dont feel rested.Also I feel a little nauseus which is only relieved by eating.Will all of this get better?I know it still early in my treatment.Thanks