should i go lighter ?

I always think that warm high/lolights can lift a hairstyle, I think your hair would look lovely with some caramel tones (not too gingery though).

You best bet is to get to a hairdresser and see what they say, how long til your wedding?

Yes, I think something a few shades lighter would be nice. I don't think a full on blonde would suit your colouring but something to lift it would look lovely.

For a change like that though, make sure you see a hairdressers rather than DIY!

Your hair is a lovely colour though, so see a really good hairdresser as if you don't like it it would be a disaster