I found out I had POTS after a very severe sinus infection and bronchitis. It took 5 rounds of antibiotics to clear it up. That was in April of 2010. In January of 2012, I spent a week at Mayo Clinic, MN where POTS was diagnosed. Since April of 2010 I have had numerous sinus infections, bronchitis, UTI's, and most recently pneumonia. Not only am I getting sick more frequently but when I do get sick it really wipes me out. My POTS symptoms are increased 10 fold and it takes a lot longer to recover than it used to. I often need more than one round of antibiotics.