CA
I was not dx'd until I was in college. Basically, until the work got hard I compensated. My issue was primarily with numbers - showed up in matrices math - my TA could not understand why my approach was correct but I kept using the wrong numbers. I have never received formal support and assistance because at first I was embarrassed (dumb) and then I realized that I had created some workable solutions and now that I was aware I needed to create more.
Now we do it online, but when we checked the check book by hand - DH had to do it because I could never catch the number reversals. To some degree I can now see it/feel it - in that, I will stare at a word and it just looks wrong to me. Since I do most work on the computer, my letter reversals are dealt with - I don't hand-write enough to have an issue with it, where it matters. On my own personal stuff, if I notice it I just cross it out, if I don't I can still read it. My issue was never comprehension - unless I am super tired - so you would really benefit from those sorts of skills because improving comprehension will make things easier for you.
Good luck! Dx is probably the most important thing - too often un-diagnosed people think they are too stupid or just can't get something when in reality they just need tools to do it. The suggestions for where to go are good ones.
DeHe