Whats wrong with me I need some help please!?

I have been feeling really weird for a while now the reason I use weird is because I find it very difficult to describe I just want to know what is wrong I have looked everywhere. The reason I haven't told my parents is because they will probably think I have some serious mental health issue or just making it up. This is what is wrong with me in the best way I can describe it I don't know how long this has been going on for now I really have know idea all I know is it's longer than 7 or so months I feel as if I can't concentrate in class or anywhere for that matter no matter how hard a try even writing this I don't feel like im writing it I feel like I am watching someone else I don't feel like im living my life I feel like im watching some body elses. Im sick of it now I just don't feel like me I feel sort of cloudy is how I can describe it like im partly in control but not fully and my body and brain is doing all the work and im just watching it happen which I know makes no sense I am my brain but thats the only way I can think to describe I just need some serious help or some serious advice, im really starting to get scared my family as far as I am aware has no mental health issues but that's only as far as I know. I feel a lack of emotion toward most things and its only when I really think about something that I really feel toward it and I don't really care about anything it makes no sense to me. The most worrying thing is my memory has changed very rapidly recently I can't remember much of what is going on or how I really got somewhere I feel kind of out of it all the time I don't do drugs or anything like that im only 14 I really just want some serious help someone to tell me if there is anything I can do If you want to ask me any questions feel free I want to answer I just want to know Im so confused!