Is it, or isn't it working?

I really thought the Lexapro was working, until today. For two weeks I have felt really good and pretty much anxiety free - and then today, it sort of flooded back over me. Mostly it is anxiety about getting cancer again and dying. But the OCD type anxiety is plaguing me a bit as well. I know how much it bothers me largely depends on how well I ignore it as opposed to feed it. I think I am caught up in a lot of fear. Fear is always the culprit. The fear is that I will never find any guy who wants to be with me - because I'm sober and because I had cancer. And because I can't seem to attract anything but assholes. Knowing how overwhelming that fear is just makes me realize how much I still don't like myself.