Traveling with I797

[tsvetomirtsachev]

Hi, I have a pending case I485 with USCIS for the past 3 years. I have applied to renew my EAD and Advance Parole card. I was approved and received I797 notice of action saying that I was approved with new expiration dates on it. The plastic card itself is not here yet. I have an emergency trip back to Bulgaria, where I am from. I would like to know if I am able to come back to the US with I797 notice of approval for the Advance parole and a stamp in my passport that I am paroled till May 2016 , that i got on my last entry in the US?

Thanks in advance