Has anyone had experience with taking Lexapro? More specifically, taking 20 mg?

I started taking 10 mg almost a month ago. I was having suffering from extreme depression, and some days did not even feel like wanting to live. I feel a lot better now, and I was wondering if taking 20 mg would make me feel even better. It just seems like towards the end of the day I’m kind of feeling anxious, so I’m wondering what doubling the amount would do. I’m just concerned that doubling the amount might increase my chances of side effects. So far, no side effects.