Brain farts

I have been having some serious brain farts lately (as in dumb moments) and I don't know what's up. It seems like it's happening mainly when I'm reading something, I'll just skip over important words and the entire statement becomes something else entirely, so when I go to respond to it, my response doesn't make sense!

I don't know if it's because my hormones are trying to regulate after getting off of birth control or if it's because I'm on a medication that's classified as a stimulant (I think that's probably more likely) but it's so frustrating!

Anyone else having these kinds of problems and does it ever line up with your cycle?