Think i may have hydrolocked my dc5r ):

[FoShizz]

Hey guys so i was driving home neutral bay lastnight after a friends birthday party and it was seriously raining real heavy. I know hydrolock only occurs when the filter is fully submerged in water but i was making sure i was driving very conservative always staying at 3k rpm or lower just to be safe.
Anyway there was this 2 lane road that had water around knee deep but was of short distance because it was a dip in the road. I couldnt turn or swerve to avoid it so i immediately put my car in neutral to minimise any suction from the filter and tried to roll through the water. Car still drives ok when im driving conservative at 3k rpm or lower but now my car doesnt go pass 5k rpm and my car can barely start up.. doesnt sound or feel how it normally does during start up and start up probably takes 1-2 seconds longer?

Ive just woke up and havent started the car since so my car has been sitting home. Whats the best thing to do now? And how serious is this?