I'm a 22 year old female and basically, I read an article couple of weeks ago that talked about floating stools as being symptoms of pancreatic cancer and I've noticed that my stool is light to medium brown and floats, no matter how soft or lumpy it is (I have an underactive thyroid which I know can cause constipation). It's sunk maybe 3 times in the past 2 weeks and I tend to go either once or twice a day and pass hard lumps, bulky stools or normal and soft. I was taken to hospital a week ago because of a very high heart rate and turns out that my thyroid is completely out of whack and very underactive. I was asked to go back in a day later to ambulatory care to sort my medication and things out and I told them all my symptoms, they ran full bloods checking for basically everything and felt my stomach etc. Everything came back normal except potassium which was very slightly low and they gave me tablets to take for 3 days. I have lost 4 pounds in 3 weeks because I'm so extremely anxious and my appetite  keeps coming and going and I'm terrified to eat because I don't want to go to the toilet and I feel a bit nauseous when I eat and I'm scared that I will get bloated because that's another sign (I don't think I do, I can't tell the difference between full and bloated anymore). I lost my appetite for a week but that's come back now. I'm hungry but I'm just so scared to eat. When I do eat, its been mostly oatmeal with water and high fibre foods and I've been drinking lots of water. Then, for just over week, I've been getting pain in my left leg and knee and there is a lump that my doctor said was just normal tissue a week ago when I went to see her. I've booked in to see her again this friday where she will refer me for an ultrasound and x-ray as she told me to come back if my fears haven't settled which they haven't. I also have had palpable lymph nodes in my neck since October which I've had scanned twice 3 months apart and they are all textbook and fine and 2 doctors at the hospital felt them and said they were fine too. Combined with all these symptoms, I am absolutely terrified that I have cancer that is spreading and I cannot stop crying or shaking and having panic attacks, I'm terrified. I have a private gastro doctor's appointment on Wednesday (he specialises in GI cancers etc) and I am praying he will send me for a CT scan because I do not know how much more I can take of this, this is causing me to feel a bit suicidal because at least that way I have some control over my own life. I'm a student at uni and have deadlines coming in a month and as you can imagine, I am extremely stressed out. I know no one here can diagnose me, I just want to get it off my chest because I live alone and I have no one to turn to. I'm scared that I have either lymphoma, pancreatic cancer, bowel cancer, bone cancer, soft tissue sarcoma or ovarian cancer since I have symptoms that match all of them and I cannot find any other explanation to my symptoms.