Niamh & Angelique...please don't give up! It does certainly take time for your body to adjust, but it will, I promise. It took me moths and months before my skin started to clear, for example, and I found myself feeling a little low too.
Sometimes I have low days - that is only natural - but I do something about it. I give my body lots of green vegetables and I immediately notice a difference. Try scrambled tofu with lots of greens thrown in...or a big green smoothie...
You may need to look at varying your diet more or just tweaking certain areas...keep eating well though, and you will definitely feel better in time. Keep up the hard - but good work and give me shout if you want any further info or help :) hugs :)