The Shower Shadow

So, I've read stories on this site forever now and finally thought I'd join a few weeks ago. I didn't think I'd be posting so soon. This happened to me just the other day and has thoroughly freaked me out.

I moved into a small 2 bedroom apartment in the heart of downtown Humble, A small suburb outside of Houston, Texas... About six months ago. Now nothing here has really bothered me, although I've noticed things happening, things moving without me or the 2 other people that live here moving them. There are cold spots, and my mother's bedroom I do not feel comfortable in there what so ever and avoid going in there most of the time. I'm not one who is too jumpy or easily scared either. Anyway back to my story.

It was late, I'd been having nightmares and tossing and turning all night. I woke around 4 with a headache and just decided to give up on sleep. I quietly sneaked out of bed and retrieved some clothes in the dark as not to wake my sleeping boyfriend. My mother was still at work at this time, so I was pretty much alone in the apartment. I really felt uneasy and couldn't figure out why. I went to the bathroom and locked the door behind me, something I don't normally do. I started the shower and got in I had just finished washing my hair and wiping water out of my eyes when I noticed a shadow standing in the doorway (My shower/tub is in like a sublet room in the bathroom) way way to tall to be either Nikolas or my mother. I stood there staring at it for a good minute and a half. I swear it was just standing there glaring at me from the other side of the shower curtain.

Now, I remind you I'd be awake for about ten minutes, three of these spent in hot water. So this couldn't have been a dream. I blinked to get water out of my eye and it was gone. Just poof! As if nothing was there at all. I quickly finished my shower and haven't showered with the door shut since.

I'm 23 year's old, and I've had experiences with the paranormal throughout my entire life. I'm used to seeing things in the corner of my eye and things like that. But this shadow completely shook me to my core. I felt unsafe in my home and I am not happy about it what so ever. When I was alone I calmly stated out loud that I don't mind sharing this space with any spirit's that are here as long as they don't try to scare or harm any of us and that anything negative is not welcome here and should leave right now. I then burnt some sage and walked throughout the apartment. But that hasn't seemed to help, I just have this overwhelming sense of doom and sadness since I've done so.

Any advice/suggestions would help me greatly.

I've asked the apartment manager if she knows anything about this place and she told me that it was built in the early 30's or 40's and that it had at one time been and old folk's home... Other than that that is all I'm aware of.