Hi Clover, I didn't realise I was pregnant, I thought I was having an unusually painful and start stop period, I was told to test then when that came back positive was sent to EPU for a scan I was just 6 weeks then. Initially they thought the clot was a twin pregnancy. The clot started off small, I was scanned a week later and it had grown even though I was constantly bleeding. I was scanned 5 times by the EPU to track the size of the clot, by my 12 week scan it had disappeared completely and the bleeding stopped.
They said they are hard to measure accurately on a scan as its moving and can be wrapped around the sac etc. All I was told was to avoid heavy lifting (which is difficult with a 21 month old!)
Hope my story gives you hope. I never thought you could bleed so much and have so much pain and still be pregnant. Xx