Honda 420 shifting problems
 

Hello my name is Carson, and I have a 2009 Honda 420 rancher, then other day while riding I got into some pretty deep water and the bike shut off under water. I turned it back on (still in first) and put it in reverse, I was in reverse but I wasn't moving at all but had the throttle all the way down and after about 15 seconds of reving it finally started to move, now this happens in every gear about 1/5 of every time I shift gears, any ideas? Also I had water in my oil after it shut off underwater but changed it when I got home