Mine is on the short side, 10-11 days. I am taking extra vit b6 which hasn't done a lot, but acupuncture has helped. Last cycle it was 14 days!
Are you in the UK or us? In the us it seems to be more common to be given progesterone to support a short lp.....but in the uk I have found every doctor I mention it to dismisses it. So I have found my own treatment.
Now on my first clomid cycle ( I have PCOS) and am 7 dpo....interested to see if this given me a longer lp or not.