There is no joy as the acquittal of uncertainty

אין שמחה כהתרת הספיקות
There is no joy as the acquittal of uncertainty.
As we have bountied thirty days of after the first days of Pesach and Chol HaMoed, in which we stop saying “Mashiv Horuach” and “Tal Umotor” in Shemonoh Esrei. Therefore, if one who is not sure if he said the proper recitation, it is assumed he Davened [prayed] correctly.