I am scheduled for my 6th ct scan within 1 year. ive heard that the radiation you are exposed to is high but how high exactly? i am only 19.

Yeah, too much.: Each CT scan gives you about 400 years' worth of the "natural" radiation you get from background sources (sun, earth) each year. Thus, 6 scans in a year is ~2,400 times the radiation that you're expected to get. While you shouldn't expect immediate harm, your young age works against you. Radiation damage is lifetime cumulative, & years in the future, you'll have problems, can't get a needed scan.

CT radiation: A single CT scan is equivalent to approximately a year of environmental radiation exposure that every person gets. A single CT barely raises your lifetime cancer risk above baseline, but 6 is a bit much for your age. Ask your doctor if the CT scan is really necessary or if you could have an ultrasound or MRI instead, which have no ionizing radiation.

Image Gently: Without knowing more about your condition, it is hard to know if you needed that many scans. This is important because there is a risk benefit ratio. Does the risk of not having a CT outweigh the risk of the radiation. You should discuss this with your doctor. You should look up the Image Gently webpage: http://www.imagegently.org/