Chances of premature labor?

I’ve been trying not to think about it and stay positive but I can’t anymore. What do you think my chances of preterm labor are?

- I struggle with high stress

- Me and my partner struggle with anxiety and depression

- My job requires me to constantly walk and lift things (my work knows I’m pregnant and I’ve been doing less lifting)

- I am underweight (gaining weight has been a huge struggle for me)

- I had spotting at the beginning of the second trimester

- I’ve had Braxton Hicks since 16 weeks

Has anyone had all/some of these and either went full term, or gave birth preterm?