Thanks for choosing health care magic for posting your queries.
From the kind of symptoms you have stated it appears that you are still having a lot of depressive symptoms. Although the regime of drugs that you have mentioned with 2 mood stabilizers and 1 anti-depressant is good and effective for many people. However if it is still not effective against you then you dont have much of an option than to increase the drug dosage or change the medication. Lamotrigin is one such drug which can be used in such a condition.
Insist you psychiatrist
to start you on CBT (Cognitive Behavioural Therapy).
Exercises and good diet will also help.
Hope I have answered your query.
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Wish you a good health!