Hello again.. i was told it wasnt clear... soo.. ill explain it as it happened...

I was leaving a friends house, and i stopped at a stop sign and as i pulled off... i hit a bump in the raod, which threw the car forward, and made me put my foot down which redlined the RPM's and then then the transmission put itself back into to Automatic and the "D4" light started flashing... everything works perfectly still, even the sequential sprt shifter.... please help?