Anyone else unable to get positive results from the baby boost?

I have tried it on 4 moms now and of those 4 moms none have had multiples and ALL have had to try multiple times (one of them had to try 9 times and she was in her 20's when I started) to have even 1 baby. I seem to have better results without the baby boost, but I am trying for multiples so I can get those trophies!

Anyone else?