I went to college, and it was a struggle the whole way through. Concentration while studying was very poor, so I just forced myself to study 3 times longer than everyone else. I knew something was wrong, very wrong, and I even went in for counseling on several occasions.
But that was 1978 - 1988, and for whatever reason, none of the counselors must have ever heard of PTSD.
I barely made passing grades. I could not sleep the night before a major exam, so while taking the exam I was so tired I could barely blink.
The studying I did end up paying off. I got my degree in pharmacy in 1988, but still had to take a national board exam. I took the national boards of pharmacy licensure examination, (NABPLEX), in August 1988. I made sure I got some sleep the night before the exam by taking a small dose of Ativan and made a 99.
I have a friend from a rival pharmacy school who once told me, 99 out of 250 ain't too bad.
That's kind of funny, but it was 99 out of 100.
Good luck to you, it can be done.