Yeah, I do sometimes. Sometimes it is because I DON'T WANT TO KNOW what I'm feeling (e.g., I'm trying not to feel anger or hurt or something).
Othertimes it is because I'm AMBIVALENT. Many different intense feelings. Rage, love, sadness, despair all mixed up so that I don't even know where to begin.
Othertimes it is because I'm NOT QUITE SURE. It is like... There is something there... But I'm not quite sure what it is... And it... Could go either way.

E.g., if I do something nice for myself I can end up feeling pretty good.
But if I think 'no - something is bugging me I can end up feeling annoyed.
Or if I think my way into it sometimes I'll feel grief or sadness.

Sometimes physiological arousal is interpreted into emotions.

The best thing for turning it into a 'positive' one is exercise or something like that. Instead of asking 'how do I feel' I ask 'what does the body want?' Sometimes it is icecream lol.