i got can openered by my training partner about 12 years ago when i first started jiu jitsu,i didnt know that all i had to do was open my guard and push away at his face to ease it up and escape.i kept my guard tight and all i remember is a ripping sound coming from my neck and spine,i couldnt even walk out to my car without help,my neck couldnt turn for about a month.ive had alot of other injuries over the years,especially when i was doing judo,id be leaving judo every training night with something screwed up,lol.youll bounce back bro,sometimes its better just to tap when you feel its sunk in deep,its only practice,in a real tournament is different.good luck on your recovery bro,youll be back in no time