Moo,
Dr Chris Ng told us that 3 SOIUIs is equivalent to 1 IVF. My hubby and I had initially thought we'll give SOIUI another try before moving to IVF but my cycles were so irregular (1 month 27 days no spotting, next month 23 days, spotting from day 18), we decided to just go for IVF which is more regulated.
But now, haha, my AR still hasn't reported 17 days after ET!