Shadows

Twice today, I've had a really weird thing happen. Both occassions the event took place in the upstairs bathroom. The first time was this morning circa 8:30. I was moving some citrus trees around in the window so they could get maximum light. I had just walked over to the sink to run some water for a coffee tree that appeared dry. As I was turning with the pitcher of water a human shaped shadow so intense I could feel it pass, passed by me and vanished. This was one weird sensation but it occurred so rapidly I didn't have time to react to it except upon recall.The bathroom has two windows, one on the western wall and one on the eastern. There are no trees anymore that are outside those windows (We lost those trees in the tornado that ripped through here last June.) Besides the shadow started before it was in front of the window. I never felt a shadow before, it was hard to discribe, kinda like very soft, very black velvet.. This is a totally new experience. The second time it happened was in the same room, just before lunch, as I put away towells and washcloths my wife had me bring upstairs. I was about midway in the room, passing from the sink area to the glassed in shelves on the south wall. Again a dark shasdow with a roughly human shape passed me, but more on the eastern side of the room, and then disappeared. I did not feel the darkness this time and the window definitely shone through the apparition. Two weird happenings in one day in the same general area of the house. The skies outside were heavily overcast so I feel any sort of shadow from the window is out of the question. I just don't know what to make of it. The first one really threw me on reflection because I saw it and felt it. The second one surprised me but I had a better chance of actually seeing the thing but I still do not know what is was.