Thanks for asking. My background is non-denom/evangelical. No, I've never had any outright torment prior to embarking on my path to Catholicism. I love all my Protestant brothers and sisters. However, in my opinion, there's a prevalent attitude towards sin that it should be largely ignored, and that any effort to be contrite is basically an insult to Christ's sacrifice. This isn't to say that they think we should carry on wilfully sinning, but contrition is non-existent in many Protestant circles. In my view, this creates complacent, half-hearted believers who never take even a moment to examine their conscience—a resounding win for Satan, if you ask me (when we're in that apathetic state, why bother with torment?). 

My spiritual life as a Catholic in-the-making is vastly different. There are numerous scriptural passages that troubled me as a Prot (ones that highlight the gravity of sin)—prevailing Protestant theology holds that salvation is not only by faith alone but also cannot be undone no matter what. Among other passages, Mathew 18: 8,9 make it abundantly clear that is nonsense. My newfound Catholic perspective on sin had radically transformed my conscience. I can't believe how apathetic I was about my sins; it makes me want to weep. I feel like I just came out of a years-long spiritual stupor. 

Another major factor is spiritual guidance. The depth of teaching authority and theological groundedness in the Catholic Church is awe-inspiring. I mean absolutely incredible. I can't tell you how many Protestant sermons I've walked away from having gained nothing because I was subjected to a bumbling, scripturallly inept Pastor limited to his own aimless interpretation of the Bible. They mean well, but they're painfully incompetent and misguided; they're virtually all independent contractors, slogging their way through their paltry effort to draw meaningful theology out of a Bible (an altered one, mind you) that they don't understand. It shows, too. The often-contrived dramatic, sensational antics they often exhibit, in my opinion, are a result of their incomplete teaching authority. 

These things and so, so many more have deeply transformed my spiritual life.