Layers of Fermentation.

So I started brewing a Hefeweizen beer last Sunday, its been fermenting for about 10 days. Its still bubbling every 17 seconds.
But when I look at my Carboy I can see a thick layer of yeast at the bottom, all the beer, then a thick layer of what looks like sludge on the top.
Is that normal? or did I screw my beer up?
If its normal, when I go to bottle it do I have to mix it all together or just siphon as is? lol I just dont want to screw up my first batch.
Any Suggestions??

It depends on the type of yeast that you used. In my experience ( all 10 beers that ive made ) its perfectly normal.

Yes, it's completely normal. when bottling try to leave the sediment (called the cake) behind.

sounds normal to me..yeast cake forming at the bottom..followed by beer...and krausen at the top. The krausen should settle out by the end of fermentation.