Less Stools release with normal diet.

Hi Doctor, for the past 1 week, I'm not able to release my stools properly. I don't have any uneasy feelings but the problem which I feel is I'm releasing very small quantity of stools. I follow a proper diet, don't consume much of oil, pure Vegetarian diet. I have started exercising by regular walking and jogging for the past 10 days. Before this problem, even if I eat in small quantities I poop regularly with normal level of stools. But I'm feared only with with quantity of my stools release right now. Its very low on daily basis with my normal rice diet and I'm feared of this. I never skip my meal. I don't have any other abnormal conditions in my health. Kindly let me know how do I proceed now. Thanks.