AFAIK "people" didn't claim she was pregnant - Al Fayed did. He is a known fantasist and thrives on attention. I know he must be upset at the death of his only son but it's hard if not impossible to take anything the man says seriously. I think it's been well established over the years that he has no credibility.
Rosa Monckton did indeed confirm she Diana was menstruating 10 days prior to her Paris crash.
She was embalmed on the request of the Royal Doctor. It is not usual practice, afaik, for the french to do this. There was a large article about this issue not long ago in The Times where the Dr said he had to make a quick decision as they were planning to repatriate her. He maintained it was a practical decision for that purpose.
The French do not operate scoop and run as in the UK/US. They just don't. Their ambulances are better fitted out than ours for this purpose. She died from a massive artery injury, nothing would have saved her.
I have been to the Pont d'Alma in Paris and it's a little slope leading down to a small tunnel. It is incredibly underwhelming to go there and see what a 'normal' patch of road could have caused her accident - but seriously, it's so out of the way and so small a junction, it would be nigh on impossible for the 'baddies' to use that as a method.
Henri Paul was an informant - thats known. He wasn't a kamikazi though. Big leap.
So, no I don't think she was murdered. If she wasn't dating a muslim playboy to piss off the Establishment, I doubt we'd be even talking about this.
Let her rest in peace.