Asking for help. I may have developed?

I was very fat from my 5 th class to 7 th class . I reduced my weight very much in 8 th class . I was on a good weight until 10th class. In my 11th i was a again overweight recording 81 kg at 175cm height. For one year I was on that weight. In my 12 th year I was on a healthy weight again and still on healthy weight. I am afraid of the disease called arterioslerosis which is caused by obesity . My current BMI is 24.2 . In 11th my BMI was about 26.3. I was never obese but overweight at specific ages . I don't Have any problem with my heart . But I am going to train physically very hard in this year . I fear about arterioslerosis already being developed. I want to do the test called ct coronary angiography. Can I?? Do you think I may have developed? These are my questions .