Kelbel, I'm with ticklish - a 6 day LP is most likely too short for you to conceive - my understanding is that anything 10 days or under is dicey at best. If you are certain that you are only Oing 6 days before you get AF I would be looking for a fertility specialist and get yourself checked out - the sooner you find out what is going on, the sooner you can get any issues (if there are any) fixed. If you have been charting, you should have some helpful info to take with you.