No period.

Since October 2018 until today may 2019 I have had 3 periods. I can’t remember what months but they were one to two months apart. Just recently I thought I started but it was very light & stopped. It happened again 3 days later. I would be bleeding so I put a tampon in and take it out and there would be no blood. I do have pains it feels like in my ovaries & my left side. I have been trying to get into the doctor but she is booked out almost 5 months prior. If this has happened to anyone else please tell me what it was. I have taken pregnancy test at home & at doctor. I have had a cyst on ovary before but this pain is not as intense as that. I have never been on birth control and I have never gotten pregnant.