12 day luteal phase

Jess
I've read that most women have a 14 day luteal phase.  Mine (while on femera & doing <a href="https://glowing.com/glow-fertility-program">IUI</a> cycles) has been 12 days on average.  Does anyone have experience with a shorter luteal phase with assisted fertility?  Should I be concerned about this as I move to <a href="https://glowing.com/glow-fertility-program">IVF</a>?  
​Many thanks in advance!