Hi RachB, I hope you get better.
Well, I was prescribed Lexapro after taking another medication which didn't work for me. In my case, it worked and I kept on taking it for a while.
I think the results and effects depends a bit on the person (that's why some medication works better for some people and not for others). It is also important to consider that the outcoming results of taking this type of medication are not immediate, since it takes a process. I don't know exactly what the time period is to start experiencing the results and to decide if it works or not. Maybe you should ask your doctor about this.
But I would recommend you ask your psychiatrist if it is possible for you to change your medication and to tell him what you feel. Then, listen to what he tells you and then you can decide what to do next.
I totally understand you when you say how hard it was for you to open up with him. I feel identified with you in this case, I would suggest that you try to be as honest as possible and tell the doctor about your feelings. Then if you feel things are not getting better, you could try seeking for another professional.
I send you a bug hug.