Newbie on TTC

Im 29 and my name is dj from canada. We are #TTC for 3 months. We are religiously taking vitamins and exercise and no bad habbits. Any advice for begginers on TTC? Aside from opk and bbt? We are 1 year married but we are both stressed on keep on trying. Is it true that most women who are stressed in trying has only 50% of getting pregnant? But women who is more relaxed and just easy to go get pregnant easily?

I have a regular AF 28-30 day cycle, still having trouble in figuring out the peak of my ovulation. I downloaded 3 apps but they are not desame 😓😓😓