Hi All!
Sorry I ducked out, last week was insane and things are only just settling down. I had my scan last Friday, and they couldn't see the pregnancy (just a very small fluid filled sac), but my uterine lining was very thick and there were no signs of bleeding. Got marked as a "pregnancy of unknown location". They took a blood test for hcg and then asked me to come back 48h later, as they suspected either the start of a miscarriage or ectopic pregnancy.
My hcg levels on Friday were 1405, they had to increase by 62% before Sunday for the pregnancy to be viable. When I went back on Sunday, my levels were at 3030+! Was an increase of 116% in 48h, which is fab. Ruled out miscarriage and made ectopic very unlikely.
I now have a viability scan on 7th June. They have to check the pregnancy is in the right place, and that the baby is developing, but the blood test results seem really promising. Can (mostly) relax for now! Should also hopefully see a hb next Friday if by miracle all is ok 
They suspect it was just a tiny bit too early when they scanned me, but all will become clear at next scan. Getting more and more symptoms, now have rock boobs from hell and daily sickness, and also picked up a UTI which I'm now on antibiotics for... Oh, the glamour!!