Could Trigger Point Injections Cause Brain Injury Or Stroke?

I had trigger point injections about a month ago. During the procedure I felt funny; like I was light headed. I even told them that i felt loopy , drunk. I have had trigger point injection before and never ever felt like that before. Now I have to think about what I m going to say, lose my train of thought, My boyfriend says he noticed a difference in my thought process. He says that I could have had a stoke. Could I have had some sort of brain injury, and is this permanent? Laurie