How long has it been? Have you been under any stress as of late? I know sometimes a lot of stress can cause someone to miss 'that time of the month.' I once went almost three months without it, despite being a natural regular, and this was because I was under an almost superhuman level of stress. So, back to the original question, have you experienced anything like that?
Having said that, you should definitely go see a doctor, at the very least to tell them what you feel.
I don't know whether or not it's the pancreas. The whole feeling cold/not eating could also be due to stress--I've suffered from that in the past, and recently, I have taken to going entire days without eating a thing. I just can't swallow food for some reason--even if I want it. I'll start eating a little bit, and then feel disgusted (by that, I mean, I feel like it's going to be stuck in my throat and suffocate me)--is that similar to your experience, or are you feeling something else?
As for the shivers, is this an 'all over' coldness, or is it limited to certain parts of your body, like arms and legs. My hands and feet are the first thing to go when I'm shivering. I wonder if this is also the case with you.
Like I said, though--regardless of what anyone here says, none of us here [as far as I know] are licensed medics. Although we may be well-educated, or well-experienced, none of our posts should ever replace sound medical advice--and we worry for you, so get to a doctor as fast as you can, ok?
