I've only been out on my road bike a few times. I'm gripping my handle bars closer to the heels of my hands than the palm of my hands. Sometimes when I am going pretty fast it feels like if I got bumped my hands would slip forward off my bars. I picture myself...chest on the bars, hands stuck in spokes, flying through the air!!!!! Is this a fit problem or just me getting used to new positioning (I'm used to my very upright hybrid).

I'm taking her in next week for a professional fit and I don't want to sound just stupid when I go in there