Aaaah, you are doing what I do. The first hint of trouble and I am on the internet Googeling like a loony. Usually ending up quite convinced that DS, DH or Dear Me has something really bad.
You are obviously a bit unsettled about this. I honestly think that you should try not to do too much research into vague notions. Honestly. Do some internet shopping instead, much nicer.
PS. All the best with the blood tests, have had a few worries with DS so I DO understand xx