Welcome at HCM.
I have read your query.
It looks from your details that you are having back pain which raadiates in leg,there is stiffness in morning & there is pain on coughing.
All your symptoms are directing towards the diagnosis of prolapse intervertebral disc
.For this you should do following-
-At least have a x ray of your back.The best will be MRI investigation.This will be able to give you details about bony as well as soft tissue
-Take rest for few days.
-Avoid bending over your back.
-Keep your weight under control.
-Take the help of a physiotherapist .You may get relief with help of ultrasonic therapy
,intermittent traction therapy,galvanic therapy,etc.
-Take a good analgesic like tramadol with paracetamol
on prescription from your doctor.
-If your problem is severe then consult to a orthopedic surgeon.You may be a candidate for surgery if there is severe radiating pain
in limbs with weakness or urinary problems.
Hope this all will help you.
With best wishes.