Due date is today! Is there anyway I can naturally help my body go into labor?

walking stairs, nipple stimulation, sex.... I've been pregnant 4 times.... these have all sent me into labor.

I think sex is what caused my labor. My due date was supposed to be today, but I ended up having her at 37 weeks

sex & walking, i went into preterm labor wit my daughter@31wks wen i was 2cm n was told not to have sex or walk n i did anyway (shame on me) lol n she came 3days after my doctors visit