previous unassisted birth - nervous about it all happening again

[2under2]

My last labour (planned home birth with child no.2) was superfast - just over an hour from start to finish. Dh and I wasted time timing contractions, running a bath etc (we didn't really expect it to be so quick), and it all didn't feel terribly bad, so by the time I called my poor midwife we'd left it all too late. Dd was delivered by me whilst dh was putting on a DVD for our older dd and the midwife was still stuck in traffic 15 minutes away. I'd had a severe pph after my first (really dreadful, induced) labour and was terrified of bleeding like that again. Dd had some problems (serious heart defect, Down's syndrome) and wouldn't latch on, but my eldest (only 20 months at the time) was happy to have a breastfeed instead (unconventional I know! ).
Anyway, the midwife arrived and everything was fine until I went into shock 1.5 hours later and had to be whisked to hospital by ambulance.
I am pregnant again now and really worried that my next labour will be even speedier. I am planning on another home birth because we live out in the Yorkshire Dales and the nearest hospital is 30 minutes away, but really, I am very nervous that it'll be an unassisted birth again. It wasn't too bad in itself, quite liked the privacy and everything was going smoothly, but that was just sheer luck.
Has anyone experienced an extremely fast labour and/or an unassisted birth before and could give me some advice?

All my labours have been fast, and with number 4 there was such a worry of me delivering at home again, but this time unattended that I went into hospital early to be induced. I had never gone full term, delivering number two 3 weeks early, so I had to go in at 36 weeks just in case. there were other reasons for the induction too, but it was mainly because of a likely hb while unattended. Each pg was faster than the one before for me by quite a bit, so when they broke my water ds came after 22mins and took the midwife by surprise ,even though I had warned her!

Actually I really enjoyed having the home births, I was just worried about doing it alone, esp as my other 3 all had the cord round their necks, and I don't think I would have been clear headed enough to sort it out myself.

All I can suggest is that at the very first twinge you must ring the midwife, and tell them you have a history of precipitous labours and an unattended birth. There is a flying squad on duty for cases like you and me. Hopefully they are not too far away, the 2 times I delivered at home they got there with 20 and 10 mins to spare respectively. Good luck.