You need to eat about 7 pineapples to get enough of whatever it is that works and if you did that you'd probably have such bellyache that would sufficiently irritate your uterus to put you in labour. Sex is more fun
Didn't work for me with DD. The theory is prostoglandin in the pessary is the same as in semen, and the oxytocin released during orgasm is the same as in the drip. Tried it purely for perfunctory measures at T+7 but nothing. Ended up being induced at T+12 with both the pessary and drip.
With my previous pregnancy i was barely allowed sex as i had a cervical cerclage, when my stitch was removed at 36+6 we didnt have sex straight away due to me being sore. When we did have sex after a 2/3 mile walk labour started a couple of hours later at 37+3. She qas born within 24 hours
It doesn't work at all. Of course some people have sex and labour starts x number of hours later. Thousands have sex and don't go into labour. It's pure coincidence.
No study has found a link. That prostaglandin might be in semen but not in a quantity or form that will start labour. In fact should the science mean anything, it would work better when ingested orally. But it doesn't.
It's like a heroin addict sniffing a poppy to try and get a hit. Theoretically, the opium is there. Practically, you can't benefit from it.