Why do I always experience heartburn, abdominal bloating, ovary pain, headaches, breasts tender, nausea, frequent urination&bowel mvmnt during ovulatio?

Ovulation symptoms. These are not common during ovulation. To answer - why you have symptoms, I am not sure as i said they are not common. More history is needed to figure out if there are other reasons such as how long you've had this happen, how long they last and if there is anything else happening at this time. I guess the fact they are transient and don't otherwise bother you is encouraging.