Thanks so much guys :) I've still got the EPU scan on Thursday as a follow up to the bleeding that happened last week so I'm hoping I'll be able to get a bit more insight into why that happened. Sent my Mum the same pic and she said 'Aw, sweet, you're having a prawn' (I don't think early scans were a thing in 1990)

One thing they didn't do was measure the heart rate of aforementioned prawn. The sonographer seemed happy with it and when I asked said they don't do it at this stage at their clinic but she was happy with what she could see. Of course I'm now re-watching the clip over and over trying to count. Hopefully on Thurs they'll let me know.
@Runnerchick80 I've had the same issue with dates as I have shorter than average cycles (25 days rather than 28) so some websites have used my LMP (2nd March) and put me at 6w2 whereas some take into account the shorter cycle plus my O day and they put me at 6w5. The scan today suggested 6w5 so that's what I'm going with! EDD Dec 4.
@agteacht The sonographer suggested it might have been my cervix, which could make sense though I felt like the red bleed was a bit too much for that. They couldn't see anything on the scan strangely.
The downside is I now want a scan every week, which may bankrupt us. Thursday will be interesting as a comparison but then it's going to be a loooong wait. 6.5 weeks down - please hang in there at least another 31 or so, 'prawn!'
@Pinkfizz19 I hope you're OK. A few duvet days sounds like exactly the right course of action - look after yourself and rest up.