Sorry this happened to you. I've heard such negative things about BC as a testcenter. Try going on toplawschools to see if you can scout some people who were there with you.
Yeah, you can't sweat over a single answer choice. If you left the testcenter feeling good, that's excellent. Keep yourself busy until grey day and don't even think about it.
... this mean? I thought big testcenter was good, but do you ... mean in smaller testcenter they do not put too ... the same room so smaller center is actually better?