I'm due one any time soon, but as the others have said no point while you are pg anyway (aren't the cells all funny cos of being pg so the results would be screwy?)
p.s. Hi Charm...how's you? Did your scan put you forward a few days? I'm sure we were due the same day. My scan date was a few days ahead of my calculated date, but the mw still said they go by my LMP date. Are you blooming yet in this magical 2nd tri? I don't feel sickly all the time anymore, which is certainly an improvement, but I wouldn't call it blooming!
Pea x