BBT and feeling discouraged

Started temping for the first time this cycle. I’m feeling so discouraged as my chart is all over the place. Can anybody relate? I’m over weight and I know losing weight would help get pregnant but I also had issues with hormones that needed fixing before I got pregnant with my first. Starting to think it’s going to be the same thing. According to my other app... I ovulated CD 15 which is early for me as I usually have 34-36 day cycles. But then I read charts that are all over the place means I probably didn’t ovulate which was my original issue 😰