Does ovulation spotting occur before, after or during ovulation? if there is any?

No, it should not, only during implantation.

Ovulation per se does not cause spotting. Some women may experience a trace of bleeding at the implantation of the embryo. If it does, it would occur about 10 days after ovulation if the ovum was fertilized. For healthy diet: http://www.choosemyplate.gov/., exercise 30 minutes/day, drink enough water daily so your urine is mostly colorless, have safe sex, no tobacco alcohol weed or street drugs.