I am 100% not pregnant, my periods can be as late as 39 days. I knew something was up before I was due my period because the day I was meant to be ovulating I didn't and instead I ovulated the following week. I am still late by 2 days after ovulation. I am underweight from birth but have always had regular periods and when I was 14 I used to skip a month and start again until I was in pain and started regularly. I wanted to induce my period but I am scared to because I will be in so much pain. There are times since 2020 (had periods since 2011) that I went yellow or pale in the face from period pain after feeling like my body was on fire and that's caused by period pain, once the excruciating pain passes it goes away. In 2022 this happened and I gagged.