Petra - that's amazing, and you hace given me so much hope at a time where it was really starting to fall. My AMH is 2.9 so also super low, my cycles are naturally short now, around 24 days with ovulation mostly around cd14 so short LP. It has given me hope that you have been successful with similar stats. Maybe all is not lost quite yet 
Sparrow - I have been taking DHEA now for a while, my LP did go shorter the cycle I started on it, but I don't think it was that that caused it. I'm currently on 50mg, it's supposed to be very good for our age group, and great for raising AMH. Who knows if it works but I'll try anything!
Also when I went to see a specialist at the clinic I asked what I could do to raise egg quality and prevent mc and he said the only clinicly proven thing was DHEA but you can't get it in the UK. (I dodn't tell him I'd already bagged some - ha)
Boosey - sorry af has got you too. Fingers crossed for us next cycle!
Karry - how annoying, I hope they manage to get someone else in to do it!