Before I knew what the intrusive stuff was (i.e. OCD) I tried to explain it to my husband as "feelings", "impressions", "images" or strange thoughts. Usually I felt like it was an impression that came over me; not my own thought but rather an impression of violence for instance.
Maybe your description of "intrusive feelings" means a sensation that arises from intrusive thoughts that you can kind of see or sense in your mind but you can't really identify clearly yet (in words?). The feelings are perhaps guilty when you should be feeling happy or something?
Anyway, from experience I would suggest letting these intrusive things fall in a trap door in your mind and disappear. If they make you uncomfortable then they are not great to give credibility to, I think.