If you have OCD, the best meds for it are those you took before, anafrinil. The second often comes Luvox. But see with your doctor about possible side effects.
First of all are you diagnosed with depression? Anti-ocd medications are anti-depressents as well. Find out your exact diagnosis and exactly why the medications are prescribed. Ask your psychiatrist that. If they think you have depression they will tell you why. And you can discuss it with them. As for the medications you discussed I believe the first is Anafranil by brand name right? That is the earliest SSRI anti-depressent which are also used to treat ocd. Luvox has less side effects but is in the same class. But they can't just switch one to another in a day. You have to be titrated off one and onto another. As for the Lexapro whether that's for anxiety, depression or ocd it would all depend. But speak to your psychiatrist about the specifics about what you are being given. And what they believe is wrong and what they noticed, some of which you may not be aware of and some of which you may disagree with. But it sets up a dialogue. And then you can figure out things from there.