Fortunately, most of the right answers to your perplexing medical questions can be found on Google. Unfortunately, most of the wrong answers are easily found on Dr Google as well!
Don’t believe everything you read. Don’t freak yourself out by jumping online and attempting to self-diagnose and do not, whatever you do, listen to the advice posted by others on open forums. Remember that people tend to only post about negative experiences.
Instead, let us listen to your story, with a fresh set of ears and without the heart-sink opening line “I Googled it and apparently I could have [insert horrific and exceedingly rare condition here]!”