I have had 2 abdomen pelvic ct scans 4 years apart i am worried about radiation and cancer plus ive had 2 abdomen x-rays 5 mammograms and a few dental x-rays im very scared this is too much and i will get cancer from radiation what are my chances ?

That's not too much: Patients get CT scans all over the world, every day. As long as there is a good reason for the scan, it is fine to do. If repeated scans are planned, to follow some sort of serious illness, a patient can ask his doctor what other options there are, in order to decrease the total number of scans in his lifetime. Having repeated CT scans over and over and over, can occasionally add up to too much.

Radiation: Radiation is cumulative, and all health care practitioners know that. The value of the diagnostic information provided is always weighed against your total exposure levels. To not know is to guess, and your practitioners do not want to have to guess about your health. The exposure you have had is far from problematic. If concerned, talk it over with your practitioners.