Lower back injury/soccer

i am 16 years old and I am a goalie for my high school soccer team. I injured it in a game when I twisted it. since then, every time I dive and/or twist it the wrong way, it “spasms” and is just soar. I was out of playing for the rest of the season and now it feels pretty good but I don’t want to risk hurting it again…or if it has been long enough for it to heal or if I need it to be looked at. I played in the spring and it is now almost mid summer. what do you recommend?