The commendable thing is that you're detached (citta-viveka) from these feelings and able to recognize them. The basis of mental formations (images, words) is feeling so it simply means you are penetrating deeper into the perceptual process, which is defined as feeling, perception, mental formations and consciousness. The thought found when you interrogate the feeling is what gave rise to it- a mental object; it would not be an external object because you are meditating.
"Yet, feeling by itself, in its primary state, is quite neutral when it registers the impact of an object as pleasant, unpleasant or indifferent. Only when emotional or volitional additions are admitted, will there arise desire and love, aversion and hate, anxiety, fear and distorting views. But that need not be so. These admixtures are not inseparable parts of the respective feelings. In fact, many of the weaker impressions we receive during the day stop at the mere registering of a very faint and brief feeling, without any further emotional reaction. This shows that the stopping at the bare feeling is psychologically possible, and that it could also be done intentionally with the help of mindfulness and self-restraint, even in cases when the stimulus to convert feelings into emotions is strong. Through actual experience it can thus be confirmed that the ever-revolving round of Dependent Origination (paticca-samuppada) can be stopped at the point of Feeling, and that there is no inherent necessity that Feeling is followed by Craving. Here we encounter Feeling as a key factor on the path of liberation, and therefore, the Contemplation of Feeling has, in Buddhist tradition, always been highly regarded as an effective aid on that path." ---Contemplation of Feeling, Nyanaponika Thera.