Kakinada Newton Don\'t worry
I did my FP (electronic) on 10/30 and my FPs were sent to INS only on 11/4 (Sunday!), after a gap of 5 days.
I too got anxious after seeing posts by others who had done their FP after me and reported that FBI had sent them on the same day or next.
Relax, check their number after a couple of days.