People develop kidney stones because: 1  Their small bowel absorbs too much calcium. 2  Their diets are too high in calcium or another mineral. 3  They have intestinal problems.  Urinary tract 1  infections. They may have inherited a certain disorder that makes their bodies more likely to form kidney stones.
1 Delayed ovulation may be a sign of poor egg quality. 2  Even if fertilization occurs, with delayed ovulation the endomtrium (uterine lining) has aged since the beginning of your cycle and may no longer be ready for the implantation of the fertilized egg.
UTI as such does not delay periods. Pregnancy is the most common cause of absence of menstruation (amenorrhea). It is most likely if intercourse occurs anywhere from 3 days before ovulation (release of egg from the ovary) until 2-3 days after ovulation. If you did not have intercourse during that time of your menstrual cycle (12 to 16 days prior to your 1st day of expected period, its unlikely that you are pregnant.