Pericarditis is tricky. It has the same symptoms as some other things, so it can be mistaken for other things. One of the things that I experienced (and it's pretty classic for pericarditis) is a lessening of the pain if I leaned forward; a worsening of the pain if I reclined or leaned back. (That's the rubbing of the pericardium.) Sometimes the rubbing is clearly audible when a doctor listens to your chest. The thing that can cause complications is a build up of fluid and that's what they'll be looking for. If there's a lot of it, they'll need to drain it. I was lucky - I had fluid build up, but never enough to need draining. Hope all gets resolved, Gisele and Oluwa.
"If you trust Google more than you trust your doctor than maybe it's time to switch doctors."