So you're saying you don't know why he prescribed those medications and/or he has not told you what he thinks your diagnosis is? If your Dr. changes or adds a medication he should tell you why he's doing it and/or you should ask him what the medication is exactly for.

Mood stabilizers are used for other diagnoses, as well. Anti-psychotics are considered mood stabilizers and they are prescribed for agitation, psychosis, hallucinations, delusions. These symptoms can be present in disorders other than manic-depression.