Gah!!! What happened to my Shower?

Alright - so I had replaced a stem valve (I think that is what it is called) to stop my bath facuet from dripping. It took me a while, but I did it and everything seemed great.

It's been about 2-3 weeks since I did anything and this morning I was taking a shower...and out of no where water stopped coming out of the shower head. It was like there was 0 water pressure.

My shower has 3 knobs you can turn, hot water, cold water, and I think the 'diverter'. Anyway, the water wasn't coming out of the facuet as strongly as if the diverter had been turned off.

I hope that makes sense.

My first thought was that the pipe going from the handles up to the shower head were broken/leaking - but I looked below and there was no signs of water dripping down or anything.

So, can someone tell me what happened and what I can do to fix it?

Thanks!

 

Shower was running when it happened?

Then remove shower head and run water without it, IF the pressure is poor now for both hot and cold. If good volume of water with shower head off, then shower head is clogged, from you shutting off the water to the house when you changed out the valve stem, and when you turned water back on, junk in the pipe let loose and jammed in the shower head orifice. Shower heads today usually have either 1 fairly small, or up to 5 real tiny holes in a restirctor inside the rear of the shower head.