"The nausea and vomiting came back until I left the field, and I tried everything I could to get back for my teammates but just wasn't able to do it."
That's Philadelphia Eagles star Brandon Brooks talking about how an anxiety attack forced him out of a key game against the Seahawks on Sunday ... and the offensive lineman says the whole situation sucked.
"I woke up, and did my typical routine of morning vomiting," Brooks said. "It didn't go away like it normally does."
30-year-old Brooks -- who has openly battled anxiety issues for years -- says he was able to get the nausea to calm down once he got to the stadium .