I have been struggling to get down to my pre-pregnancy weight for 2 years, and finally did it! Wouldn't you know it, I am now 12DPO! Since TTC #2 my LP's have been shorter at around 10 days. I wonder if there is a connection? I am reading Making Babies now, and it says losing even 5-10 percent of your body weight can help tremendously. I am also out this cycle for IUI because of residual cysts. I hope that's not what causing my good luck for lengthened LP. Maybe I'll POAS tomorrow. Even if I get a BFN, I'm happy anyway.