Replying to Water ramp question...Has anyone else almost deid?

K well i was out in quebec for the water ramps witch i was pumped for and so on..anywho they taught me how do go down the ramp and stuff.but they did not tell me what to do after i land...so i go my first time i land i float back fine ..beaucse i didnt think you had to do anything..k then i go again just do like a shiffty 180..fine float back thrid time i land in the water waiting to float back and all of a sudden im getting sucked under the water and i am trying to stop myself no matter what .im going more and more until im right about to go under and i yell help then there i was under the waterr...my hands waving back and forth ..i thought i was dead after 20 seconds under the water..still no one has done anythingg ..all of a sudden i hit something very hard..it was the stairs  ..but dont go and say o ya you could have just swam up...these were giant jets and air bubles sucking me under the waterrr)..then i stick my hand out pf the water when i get a hold of a stair ..luckly there was a french kid there who got his ski stuck to a stair that luckly saw me and grabed my hand..i was up and throwing up water and coughing ...when i see the life gurad i go what the fuck..she goes so your ok then??..now i have a water phobia  this is 2 months later and when ever i go near water the sequence goes through my head of my drowning and dieingg..what do i do to get over it....??like the thing was that when i put my skis flat after i laned then i stared to get suckedd..who else has had this happen to themm?