15 Years Old, Lower Back Injury

I am 15 years old and I was doing farmers carries for conditioning and it injured my lower back. This happened 2 weeks ago. It feels like a sharp pain right at the lower most part of my back near my glutes. It healed but just yesterday I re injured it doing a power clean.

The same sharp pain came back not after pulling it off of the floor but at the end of the movement when I caught the bar on my shoulders. I don’t understand how I injured it again I was only using 135 lbs and I did cleans 3 days ago and went up to 175 with no problem. What should I do speed up my recovery and should I see a chiropractor? Thanks.