Trying to figure out what to do

Since I was sick last week I have been having trouble with panic attacks again. I only had one full blown panic attack and that was the night that started the whole sickness. I got nauseated and then really sick! But the nausea started the panic attacks again. All week I have been fighting not to have a panic attack. I thought this was over! I haven't had one for a long time and have been off the medicine for almost 6 months, now this! I was at work today taking care of patients and all the time fighting a panic attack. I do not understand why this is happening. I have nothing to be panicky about. I am truly blessed. Yet here I am. There is no doubt only fear and I do not know of what. I get this sudden feeling of doom and like I am having trouble breathing but I am breathing fine. Then I feel like I want to run home to my bed and pull the covers over my head because that is only place where it is safe. I sing hymns to myself to occupy my mind so I can stop the focus on the fear and slowly it subsides only to rise again a few hours later for no reason at all. I thought it was over and I would never have to go through this again. Granted it is not as bad as the first time but maybe that is what I am afraid off that it will get that bad again so where I literally spend days in bed. O Lord please help me with this. I do not know what to do. Maybe I'll just make a doctors appointment for tomorrow and talk to the doctor and tell her its happening again. ..........Just needed to get this all off my chest....