Low back pain with random leg pain

Hello, about 4 months ago I started Crossfit and I was really enjoying it. I went to a local gym on an off day and I was doing the push press and felt a minor tweak in my lower right back which wasn't all that painful. Over the next few days it lingered and became a dull achy pain towards the top of my hip. I continued Cross fit for about another month as the pain would subside when I was warmed up and working out. I have since stopped all of that and rested it for a week at a time on numerous occasions. I found that the pain came back the most severe after I did dead lifts and any overhead exercises.

At this point it is sometimes uncomfortable to sit with the dull achy pain and when it is at its most severe, I have a bit of a radiating pain that ends at the front of my leg just above my knee. I have been doing back extensions and lying on my stomach and alternating lifting opposite leg and arm to strengthen my back. I am wondering what else I can do or if it is severe enough to see a PT?

Thanks

You should contact any orthopedic doctor. He will give you the right solution. You can do an X-Ray or MRI for serious cases. If there is any fracture found, it needs surgery. Otherwise, doctor will suggest your physiotherapy, medicine, exercise and rest. Thank you.