I recently received a crown (C) on my 15 the next day I had shooting pains that seem to migrate to 14 & 13 & recede after days?

in reverse i went back She gave me antibiotics which didnt work through trial & error & pain I realized mouthwash (mw) was causing the pain I told her that i think there is a leak allowing mw in the C causing pain as my pulp is just exposed to mw as if it was marinating in a bowl She disagreed & said there is no sign of leak on x-ray & i should change my mw & pasteI changed mw to a non-alcoholic & sensitive paste & still have the pains. am i imagining the relationship between the mw and pain?