Only once after my conversion have I ever doubted my saved status before God. That was when I became uncertain whether my “faith” in Christ was really and truly “saving faith.” Mercifully, however, God soon showed me that it is not by faith that I am saved — but by grace (and only “through” faith). even that instrument of faith is not from myself. God gave it (Eph. 2:8).
So I now have no trust in my experiences about my faith. I put all my trust only in Christ Himself, irrespective of my experiences of Him. I have no faith in my faith. I have faith only in Christ. And by regular Bible study, prayer, church attendance, and the use of the sacraments — God strengthens such faith. See the Confession X1V:1.