How concerned should i be about pancreatic cancer? unfortunately i've not taken the best care of my health due to prior work. alot of fast food the past 10ish years and smoking since 19 i'm 34 now. just had ct scan and blood work all clear so far?

Since you are concerned it is a good time to start taking care of your health.

Bias in self diagnosing is increasingly common and creating unnecessary anxiety. You are definitely feeling guilty about lifestyle choices made over the last 10-15 years. So far it does not sound that there is any evidence pointing towards your pancreas on imaging, nor any evidence for abnormal growth.

There other cancers and deadly diseases that you are at risk at. You can reduce your risk of cancer by adopting healthy habits: Eat a mostly vegetarian diet, avoid alcohol, tobacco and street drugs, avoid excessive exposure to sun, exercise 30 minutes each day, drink enough water so your urine is mostly colorless. If you are overweight, lose weight to get your BMI to less than 25.