Anxiety

I've had anxiety all my life but the past 8 months have been pure HELL!! I constantly feel in my head that I'm going nuts, & my heart is always beating out of my chest. I'm currently 6 weeks Pregnant and on 20mg of Celexa. I just wanna wake up one morning and not feel like this. Worst thing ever, I swear!  Any ladies have any advise on what to do? I don't wanna feel like this for the rest of my life! I'm miserable.