I know I'm new here and this is my first post, but I have had a VERY similar experience back when I was around 24 (35 now). I was lifting heavy, starting getting sharp shooting pains down my spine, lower back and down my right leg. After ignoring it for a relatively short time because I did not want to stop lifting and was on test at the time, I ended up severely fuckin up my Sciatic nerve. Thats the pain you feel going down your right leg. I was bed bound for over 2 months as a result.
I would say to stay away from a chiro(never had any luck with them) but DEF go to see your PCP and DEF STOP LIFTING!! Until your Doc says your 100% and maybe even after some physical therapy, DO NOT continue your normal lifting routine, I know thats the last thing you want to hear but its your only option. Seriously you do not want to injure your Sciatic nerve, it's a problem that will plague you for the rest of your life, I speak from experience. Best of luck.