Changing my mind

Hi

I have done all my UCAS application and have applied to do Human Geography at QMUL starting in September (2017).

However I am starting to wonder if I made the right choice and am starting to think perhaps I should have chosen German BA (I am currently studying German A Level). I don't know if this is just me getting some kind of cold feet and it is just a phase and actually I would prefer to do geography, or it is me getting nervous about my exams (I am on track to get an A/A* in German and I am just about scraping a B in geography).

Even if I did decide I wanted to change to German, would it be very difficult to change now or would I have to take a year out and reapply for next year?

I would really appreciate any advice, thank you
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