Thanks for all the great advice!!
My biggest fear is that I have no publications at all just 2 *tiny* conference talks. I did win some scholarships as an undergrad and a small grant for my undergrad research. Thankfully, I have a strong research background and my proposed research idea is also strong and inventive. In spite of this, I feel as if I will be viewed as a weak candidate because of my lack of pubs.
Has anyone gotten the NSF without prior pubs?