MOMENTS OF NOT RECOGNIZING SELF

Hello ....
Recently for the past 6 months I have begun to have strange feelings. I look into the mirror and just stand there staring at myself and ask myself "Thats me?" Its almost like I dont recognize my face anymore. Also I get this feeling almost every day, a feeling similar to deja vu, where everything seems to stop or slowdown and I cant believe im me. Its like I can still think but im separate from my body and personality? Does that make sense? Almost like im someone else inside my body??? I dont know what this is ... but I suppose maybe it could be part of my personality? Since childhood ive always felt a little different ... separate from everyone else as if I see something others dont. Apart from this issue I also tend to be an extreme introvert and feel like i strain myself to have a conversation, even with family. I also get this horrible feeling of dread before I talk to people too ... and I think I oversmile to try to compensate.... except that this gets awkward when I cant keep the smile up and then it starts to tremble and fall. Anyways these moments where I feel like im not me do not happen when im around people. They mostly happen when im alone. Like when im driving ... or walking or sitting or drinking something. What do you think this is? Other info I would say that I do tend to be a rather depressed person I guess but also a stoic one. Also my MBTI type is INTP just in case that helps. Thanks

It really just sounds like a lot of depersonalization to me. That detached feeling.