Definitely have sex!!!!!!!

Prostaglandins in the sperm, soften and ripens the cervix and it can bring on labor, natural way to induce it (they use prostaglandin gel to induce labor!!!)

Trust me, it worked with my pregnancy, might be the last thing you want to do, unless you are feeling sexy and gorgeous, which I did not, at 41 weeks pregnant that was incentive enough, labor started soon after.......

Good luck!!!