Pain under ribs, loss of appetite, nausea and feeling really down

Hey everyone, 

So bit of a long story. I am a 19 year old Male that weighs 56kg and has a height of 175cm I have been sick the last three months have been suffering with acid reflux for better part of about two years now with a recent flare up about three months ago after a night out drinking. I went on PPI's again for about a month and they didn't seem to work too well at all and then went back and ended up doing an endoscopy which came up all clear. I decided to come off he PPIs Nexium 40mg and leave it be which was about 2 months ago now. The last month though I have been having other symptoms. Where my pancreas is just under my ribs on the left side of my abdomen I have been having this constant dull ache that isn't super painful there along with loss of appetite, nausea, feeling more thirsty over the last year along with constipation and diarrhea and pins and needles mainly my feet which are  issues happening all the time. I have had an ultrasound of my entire abdomen including my pancreas which showed it as fine but I am unsure how accurate they are? I also had a blood test the week of the ultrasound and one yesterday that I got back today which showed some abnormal readings of blood sugar levels of 7.6 after 13 hours fasting which has me worried and the doc has ordered a oral glucose test tomorrow for possible diabetes. Now my worry is could this possibly be Pancretic Cancer with the possible Diabetes diagnosis? I have a lot of the symptoms of it especially with the pain where my pancreas and just this general feeling of being sick and not being able to concentrate and it has persisted for well over a month now along with possible diabetes. Should I push for a CT scan? The doc didn't want to do one initially because of my age and has referred me to a Gastroenterologist but it really has me worried especially with my anxiety I have. In terms of diet I tend to only drink water have a lot of fresh fruits and vegetable, barely drink alchool anymore and have cut down on take away. All of these issues are having a massive impact on my life with dropping out of university recently and struggling to pursue my passions and work, distancing myself from friends and my birthday coming up next week which I have 0 excitement for. My life before all of this was really enjoyable and amazing but now I just feel like nothing. I just don't know what to do or what I suffering with exactly and I feel horrible any help or advice would be really appreciated