Day before, or day of Embryo TRANSFER purchase 1 whole pineapple
Cut pineapple into 5 sections, making sure to include the CORE of the pineapple into these 5 sections. (the core contains the most concentrated amount of pineapple)
On the day of the embryo transfer, about 2-3 hours after the transfer, eat 1 of these 5 sections of pineapple (including the core)
Continue to eat 1 section of pineapple each day (including the core) until you have eaten all 5 sections. The core isn't tasty, I found it pretty blah and not tasty at all...just a warning.
Pineapple contains bromeline which has been shown to help with the attachment of the embryo to the uterine wall. The study was conducted with fresh, whole pineapples (not pre-cut or pineapple juice) and the maximum recommended dose/days was 1 pineapple in 5 days, including the core. (I will try to find you this study, I got the info from my acupuncturist).
Too much pineapple juice can irritate the uterus, so make sure you stick to only 1 pineapple and split it over 5 days.
There are also bromeline pills, I've been asked about these before. The study was only conducted on fresh pineapple so I don't think anyone can attest to the success/assistance of a pill form of bromeline.
I personally did this pineapple regimen and acupuncture (the day of transfer only) and I think that these both contributed greatly to our success.
Best of luck to you and let me know if you have any additional questions!