Anxiety

Please, I need help. I've always had anxiety and was on medication for it prior to having my baby, but because I'm nursing I don't want to be on any medication. Ever since I've had my baby though I'm such a basket case. I constantly worry about something happening to her or to me. I love her more than anything else on this planet and I need help changing my perspective. I want to be more optimistic and love life, but I'm so scared. Please help me.