HI, I DID IT BEFORE MY BYPASS 9 YEARS AGO AT 200IBS.  IT WORKED THE FIRST TIME.  I TOOK METRODIN INJECTIONS.  HAD 12 EGGS FERTILIZE ONLY TWO LOOKED HEALTHY, DOC PUT ALL BACK IN AND WE GOT ONE WONDERFUL BABY BOY.  I WOULD THINK THE WEIGHT LOSS WILL HWLP YOUR CHANCES GREATLY.  GOOD LUCK.
ANGEL