Date is Stuck on my Submariner

[samar2161]

I bought a Submariner a year and a half ago. I wear it regularly, and when I don't I keep it in a winding box. It has worked pretty well, up until 3 weeks ago. When I pull the crown out to adjust the date, the date won't change at all and stuck on day 29. I can hear the click when I turn the stem on this position, but nothing happens. When I pull out to extend the crown further to the time position, and I turn it until I hit midnight, I can see the date is trying to change to the 30th, but then just gets stuck on the 29th. Everything else like the winding position, the time position work just fine. It tells the correct time, it's only the date position that's failing, and even when I try to adjust it manually, by getting it to go past midnight, the date still won't change. The watch is only a year and a half old, so it shouldn't have any issues. Any idea what could be the problem?