Julesy - I went through an entire pregnancy and delivery with none and then towards the end of my pregnancy with No 2, thanks to a really bad bout of the runs I got the dreaded roid!

After delivery of my 2nd they did flare up, but I had daily salt baths and applied anusol cream and they reduced really quickly. Unfortunately mine have flared up again at the moment thanks to not drinking enough water etc etc.

Unfortunately you are definately not alone!