The silence is deafening but you’ve got to cut through the noise and make a quick decision. Can you make it back? If not, then where do you go? You’re the PIC so what’s your plan?
Actually you have everything you need to deal with this. What's best glide? Where’s that checklist? Make this problem the lesson of a lifetime.
Arrive well briefed for this flight and get extra sim time. Access and review the materials here.