Pregnancy and Panic Attacks

I am about 7 weeks pregnant and having such bad panic attacks and looking for suggestions. I have not slept more than 2 hours each night for the past 5 nights and am so wired, shaky, and sick (despite trying benadryl, unisom, and phenergan on different nights). I am taking Zofran during the day for awful morning sickness and phenergan at night. I am also on 20 mg of Celexa for the anxiety/panic. My heart rate was over 100 for three days, but taking the Zofran has slowed it down. I just feel awful and don't think I can't take any more of this. Do you have any suggestions on what to do or how to get some sleep?