Ps. They probably will do a blood test, but don't worry. I got one a few months ago and was freaked out before it, but its not too bad at all. All you do is pull up your sleeve and close your eyes. You will feel a little prick, but once its in, you can't even feel it. It doesn't hurt at all during the test, but your arm might be sore after, for the next few days. Its not too bad. Don't worry.

BTW, I have a feeling you're being a worry-wart and imagining things.