hi hon, i'm soooo sorry to hear how things are going for you right now. i agree with you that if not better by weekend then going back to hospital for safe keeping will be a good idea....or even over the weekend if need be.
when you are having panic attacks....remember to do lots of deep breathing and tell yourself it is ONLY a temporary feeling. The more catastrophic you let it feel or believe the attack to be then the worse it will become. So....even when it doesn't feel like it will be over soon....just take deep breaths and repeat to yourself or silently "This too shall pass" or "It will be over soon". Repeat either over and over and over and it will help calm your system and bring you out of it, but you HAVE to remember to take nice long deep breaths while repeating the words.
love you hon. take care of yourself!