Keep Burning Out Headlights

[Jim68]

Alright. A few nights ago I was driving and my lights both flashed kinda blue and went out. So the next night I bought a new halogen one from autozone and put it in and it works for a while but as I'm leaving church a little later I come out of the driveway and hit a little bump and the new one did the same thing. I replaced the voltage regulator and checked the grounds on the front wiring harness thinking maybe they were getting too hot and making the filaments brittle so just a little bump would break them. well tonight after I replaced them again, guess what? same problem. Burnt out on the way home. HELP. anything. thanks guys.
James