After descaling my Keurig machine my coffee I just brewed is thick and cloggy. Any advice?

Did you go through the rinsing process at least 12 times (12 large cups worth of clean water after the solution)? You may have to fill the water reservoir a couple of times. This should wash away the scales that you descaled (calcium deposits) as well as residual solution. You want to make sure to not use any pods during the rinsing process, just water. The clumps are probably the calcium and/or the descaling solution. You can also use white vinegar to clean/descale. Again, you will need to thoroughly rinse by running about 12 large cups of water through so that it doesn't taste like vinegar or get clumps. This way is cheaper too!