Is it normal after lifting weights your back hurts?

Answer 1

No. Definitely not. If your back hurts after workout it means, either you have a weak back or you are doing the exercises wrongly. Generally, doing heavy exercises like squats or shoulder presses with bad form or in an improper way puts a heavy stress on our back which causes Back pain. Some people who have met with accidents or due to any other reasons have a weaker lower back. If these people indulge in heavy weights workout without proper back support (Belt) they may get back pain.

First you take a week off from the gym to ensure that you do not have back pain.

Then, I would suggest you check out with a experienced mentor in the gym and get their opinion about the way you do heavy exercises. If they feel you are doing it wrong, find out the proper way and fix it. If you do not get any further pain after the workout it means your workout was the reason and nothing to worry.

Even after doing the exercises in a proper way you get pain, better consult a doctor...