The total urls in my sitemap went down from 3200 to 1800 in the last 2 days and the total indexed links went from 2200 to 1400 and now to 1200. Is anyone else experiencing this or do I have some sort of penalty on my site. All the pages I had indexed before in google are still there if I use the "site:" search function. Also I still have the same SERP positions for all my pages except one which I can't find.