Clomipramine without mood stabilizer

My psychiatrist said lamotrigine doesn’t affect the antidepressant effect of clomipramine
Neverthess I noted that, by taking just clomipramine, my mood went well but it made me manic.
Neverthess I also noted that I was beter when the dose of clomipramine was decreased and without lamotrigine
Is it possible?
But it’s totally in contradiction with my psychiatrist isn’t it?