Dyslexia and dyscalculia?

Before I start, I've already been diagnosed with scotopic sensitivity and I'm being tested for ADHD but I'm feeling really frustrated. Because even if I do have scotopic sensitivity and ADHD, that doesn't explain all my difficulties. I think I have good reason to believe I am dyslexic and suffering from dyscalculia but I don't know how to get tested.

I've always had a hard time reading. I always skip over words, lines, even whole paragraphs sometimes. I have trouble with handwriting, it's very messy and I often leave words out of my sentences. And then there's the most frustrating thing which is swapping letters around. For example, I often write "p"s instead of "q"s and vice versa, "d"s instead of "p"s, there are probably more but I can't think. Then there's words that I will always misspell. "Conservation" instead of "conversation", "revelant" (relevant), "incest" (insect), "excerise" (exercise), etc. And always, always since I was very young, I'd get left and right confused. I don't even know how. It took me until like 12 years old to understand left and right never really changed which is super late :icon_redf I mean, I want to read. I really do. I want to read Shakespeare badly but I'll never get to that level of understanding. When I was 14 or 15, I challenged myself to read Harry Potter and the Philosopher's Stone and I started crying because I couldn't do it :lol: (I eventually finished it) and it's a book for like 8 year olds. It took me months to finish. I just hate it because it comes so easily to some people and they can spend hours reading. I try to read for a few minutes and I get headaches.

I've had trouble with math for as long as I can remember. I can't describe too many symptoms here. I just suck. I can't get anything, even if it's described to me two, three, four times. It's like it just doesn't click. I was tutored for two years and I still fail math exams. And I'm talking algebra, finances, trigonometry, fractions, even addition and subtraction occasionally. I just can't do it. The thing is, I love math and I want to do it (like reading) but my brain just has this...weird block. When I was maybe 13, I had this huge dream and I wanted to study Physics. I could only take the class once I was in the Eleventh Grade and that's exactly what I did. I loved hearing the lessons and I was so proud of myself once I started to partially understand something but I had to ultimately drop the subject. Because I was so behind the other kids, I was hardly getting the answers right and it was causing a lot of distress. I think I cried after every class because I wanted to understand so badly, I felt so stupid. I still do even though I shouldn't. I hate that some of the kids were intellectually gifted and had higher IQs while I just suck. My IQ is slightly above average but it's not like I can do anything with it.

Do I sound normal (but stupid) or should I actually seek a diagnosis? And how do I even get diagnosed? I need something anyway. Some days I wish I'd just die because I can't read or write, I can't do math, how will I ever get anywhere in the world? The only subjects I enjoy are Shop and Art, I also get guitar lessons at school but I can't really do anything with those subjects :/