Greetings to all. I am 22 years old, and have been dealing with this back pain for about 3 months off and on now. Before I explain, I will give a brief history of my lifting.
I am not a professional powerlifter, it's merely a hobby of mine. I started going to the gym for the first time last year, February 2016. Until the end of June 2016, all my lifts were quite high compared to what I started. I will focus on the deadlift, where the problem occurs. At the end of June 2016, my conventional deadlift was 150 kg for 5x5. I did this only with chalk, nothing else. During the summer, because of exams, international workshops and other things, I had to skip lifting until October 2016. When I got back, of course I started with lower weight on everything, namely 100 kg deadlifting. I went up to 120 for about 2-3 weeks, when suddenly one week I get this sharp pain in my lower back. I spent 2 months, going to 3 doctors to check what I had, with no one giving me a helpful diagnosis. My spine disks were perfect, so nothing there. I found out by myself that hip flexor exercises helped ease my back pain by a wide margin. So I focused on stretching and strengthning my hip flexors. And I got back to heavy lifting again this month. I had a good 3 weeks, last week I deadlifted 130 kg(this time sumo, because it was easier on my back) without any problems, but this week I got the old pain again, although to a lesser degree.
My body is prone to injuries, but I don't want to stop heavy lifting. I have spent countless hours on checking the form, the ques on the big three, all the necessary base knowledge on strength training.
Like I said, I've seen a lot of doctors without any success, so throw anything that comes to your mind on what might the problem be. Hip flexors, core, glutes, etc?
Thank you in advance, and sorry for the long post.