Having a mini crisis, wanting to switch course...

Hi,
This is my first ever post on here so excuse me if I stray from some Student Room etiquette or something but here goes:
I've applied to Dundee to do Law, they're the only offer I have (requirements AAB incl Gen)

I've realised (or is it just a phase?) that I don't want to do Law, I want to do History because I find it more interesting and if I want to practise Law I can do a conversion course anyway (I didn't realise when I applied how common these seem to be). Dundee's History course doesn't look as interesting as others and isn't as good comparative to their law course (lower down rankings, probably shown by entry requirements, AAB for law and BBB for history)

Basically, what do I do?

Can I switch this year to another uni's history course in clearing?
Should I re-apply next year?
Is there anyone out there who can persuade me that Law is actually fascinating and that I should do it anyway?

I suppose this all hinges on my results too, although I expect I'll get AAB at the end of the day.

Sorry for the ramble and thanks for any help