Please help😕

For the last five years I have been struggling to think, in these five years I struggled to come up with how to explain how I am feeling and still find it difficult but I literally cant think. The best way of describing it that I came up with is its like a daydream. You know when your daydreaming and u can hear and see everything but it all just bounces off your ears or your eyes and you have no idea what’s going on around you, but when u wake up from the day dream u feel back to normal and can tune in to your surroundings again. The feeling I have is like that when u are daydreaming except I feel it all the time. I noticed this from daydreaming throughout the years and realised that I still felt like I was daydreaming even thought I was fully aware, walking around or talking to someone but everything was just bouncing of my ears and my eyes and I have no idea what’s going on. My mind feels blank all the time and it’s really hard for me to contain a conversation or do any work. It affects my memory aswell because anything I do or that happens I just forget almost instantly. I also feels like when your extremely tired and just can’t concentrate and I feel drained. I also find it hard to read because like I said before about daydreaming it’s like that; I read a line or two and I can’t remember what it said and my mind goes completely blank, I usually have to read it a good few times before I move onto the next part and it also makes me dizzy and the words get jumbled up or I read the same thing multiple times without noticing. I know I’m not just tired or overtired because I’ve tried taking multiple naps or sleeping earlier and I still feel the same when I wake up. This is really affecting me in a bad way and I don’t know who to go to about it but I know there is something wrong because I can feel it and I know what it’s like to feel completely awake or normal and it’s just getting worse and worse. I’m really struggling with it now as I have really important exams coming up in two weeks and there is two years of coursework in seven different subjects that I can’t remember even though I have been studying really hard for them all year. It affects me socially aswell because I can’t communicate well with anyone as I can’t think of things to say because my mind is completely blank and when I do talk to people anything I say makes no sense and I get embarrassed. Most of my friends have been drifting with me lately and others have distanced themselves from me because I don’t talk but it’s just because of whatever is going on with my head and i have tried to do research on it and talked to family members and can’t find anything that sounds familiar to what I’ve been experiencing. I really need help and I have no idea what to do so if anyone could give me some advise on who to go to or if u know anything like this please let me know, I know this is probably a bad description but I tried my best to explain so I hope it makes sense. Ps. I have also went for an eye test a few times because I thought it could be a possibility of what it is but there’s nothing wrong with my eyes.

Please help😕