Has anyone used Evening Primrose Oil as a suppository?

I'm just wondering if anyone has used Evening Primrose Oil as a suppository and if it worked or not. I'm 39w 4d today and trying everything to naturally start to induce labor so as not to get an induction. I've tried pineapple, bouncing on a birth ball, walking, Evening Primrose Oil (orally) and just bought some raspberry leaf tea. (Probably starting all this too late but worth a shot right?) Only things I haven't tried is vaginal Evening Primrose Oil and sex since it's so hard to accomplish at this stage in the pregnancy. Feel free to comment any tips and tricks or what worked for you. :D