Drove through puddle, car behaving strangely?

I drove through a puddle today, wasnt too deep, just enough to slow it down. But then going around a roundabout straight after it was a little sluggish getting around in 3rd gear. Then i parked at the shops and left the stereo on as y sister went and got something. It started fine. then going up a hill just after it lost all power in 3rd and 2nd, no revs at all, so had to go up in 1st. i then stopped and i was idling just under its normal idle rev count and was shaking like it does when it is about to stall, havent tried to start it for a few hours. it is still raining, will it be ok to get home? and will i be ok in general? does it just need to dry out? rev it out next time i start?