Hi Amy, from what I have read, yes 9 day LP is too short to support a pg. I have read that B6 can certainly be helpful. I actually started taking this myself, then read that you shouldn't take more than 200mg a day, the tablets I was taking were 240mg a tablet, so be careful what you buy. I have now switched to 50mg tablets. The other herb that can help regulate your cycle is Vitex (Agnus-Castus) but note must not be taken once you get a BFP. I have mostly read good things about this, but have also read some negative side-effects, so I wouldn't recommend taking it before seeing a naturopath. My LP is 11-days, so may be fine, but I have heard can be borderline, before my loss it was longer. If I don't conceive this cycle I have decided to see a naturopath and get the right herbs / dosages for me, I assume this may save a lot of time and stress, so I recommend that to you as well. All the very best.