Hi P B,
I have 4 children 3 boys 18, 14, 6 and one girl 4.
My oldest had the same problem. He was potty trained at 2 but still had nite time accidents till he was "11". It was very hard since his younger brother was trained at three and had no nite time accidents from that point on.
We also did all the "tricks" that everyone told us, limiting fluids, "no" fluids after 6pm, waking him up through out the nite, plus some pretty strange ones (thanks mom). Nothing helped. The hardest part was to keep myself from getting frustrated. My friends at the time, were no help and forget my mom who was so old school it was a joke. I thought at one point that it was never going to end, that there was a major problem with my son. Finally our Dr told us that many boys have an inmature bladder and this is the cause of there nite time bed wetting. he told us to keep us with the routine we had because it could not hurt, but he did say that he would out grow it. His bladder just had to catch up with the rest of him. Larger children( I am not talking "over weight", just larger) seem to have this problem until the bladder catches up with there body. He did not recommend any meds for this.
I hated changing sheets all the time. however, while visiting a relative in the hospital, I grabbed one of those pads for the bed, that go over the bottom sheet. It was a life saver. ( I am not saying that you should actaully steal one from a hospital, lol, they actually sell them now).
Now my 6 year old is going through this.....)(my 4 yr old has no nite time problems)....But now that I know what the problem is I dont get that crazed about it. ESPECIALLY SINCE NOW THEY HAVE THE GREAT OVERNITE DIAPERS. They really make a difference.
My advice to you is dont worry, it really is normal. If you get worked up it will make your son feel like it is his fault and it really isnt. My son tells me now that seeing me get so upset in the mornings really used to make him feel like a failure. (Yes, he is 18 and this is the time to lay Mom with the guilt trips, lol)
His body will fine tune itself when it is ready. Just make sure to tell him that it is not his fault, and yes explain it to him in a way he can understand. It is amazing what they can understand. I actually heard my 6 year old talking to his cousin about why he still wears a diaper at nite. He laid it right out there and his cosin(who is the same age) just said OH- OK lets play. and that was that. No more teasing - nothing.
I wish you luck....But really DON'T WORRY, it is more common that people admitt to.
L.