Anxiety / Panic Attacks anyone?

FirstTimePregnancy

Prior to becoming pregnant, I have never had a panic attack. However, now having been very ill with a sinus infection, constant cough, and overall nasty head cold for the past week, I have had several panic attacks while trying to go to sleep due to feeling like I cannot breathe.  As a result, I have actually come to dread going to bed at night because it always seems to be a repeat of the night before.  Prior to being so sick, I was taking naps all the time and now all I want to do is sleep but feel like I can't.  Perhaps this whole thing sounds rediculous, but for someone who has never had panic attacks before, it has been quite scary. 

For those of you who have experienced panic attacks in the past, what have you found helps to calm you down?  TIA!