Why is a short LP bad? Or is it...

Ambeerose · September 2010

I'm not asking this for myself since this is my 1st month charting and don't know how long mine is...I just see people talking about it all the time and didn't see anything in FF about it except avg. can be from 10-16 days.

Birdies08 · September 2010

My understanding is that if it's less than 10 days, it can interfere with implantation, since that normally takes place between 7-10DPO.

Bunniehug · September 2010

Yes, it can interfere with implantation.

Some docs argue that anything shorter than 12 days can be a problem.

FyreFry5 · September 2010

Birdies08:
My understanding is that if it's less than 10 days, it can interfere with implantation, since that normally takes place between 7-10DPO.

This. If your LP isn't long enough, you begin to shed your uterine lining before a fertilized egg has a chance to implant.

ETA for clarity.

Ambeerose · September 2010

Ok that makes sense and that's terrible since you have no control over your lp...unless they have meds for that I'm not aware of. Just one more thing your body has to deal with when ttc I guess.

brookelynpaisley · September 2010

There are meds. Either progesterone or vitamin B6 (both should be used as a prescription from your doctor) can extend the LP and make implantation more likely.