Since the specialist doctors said that you have only minor disc bulges, you do not have to worry. Sometimes these symptoms can be caused by disc bulges which then need surgery, but this is not so in your case.
Although you have written that physical therapy seems to make it worse, this is in fact the one way which will get rid of your pain. This is something that you can do yourself to help yourself. If you do the PT correctly, you will not need any doctors, chiropracters, etc.
The measures that you should take are:
Avoid stressing the back - avoid anything like lifting heavy objects, standing for long periods, bending forwards.
Warm compresses- warm compresses are often helpful. You can also go for deep warmth with ultrasound and lasers which can be given at physiotherapist clinics.
Tab. Motrin 400 mg - take one tab. twice daily. Physiotherapy
: do gentle exercises for the back - start gently as long as the pain is there, but once you recover you must continue doing these exercises so that they do not recur. I would advise you to start doing these exercises straight away, the only precaution being that you should start very gently and then increase the quantum of exercise.
You can look up these sites for more info: http://www.nlm.nih.gov/medlineplus/ency/article/003108.htm http://familydoctor.org/117.xml
Please look up this site for some exercises which you should do, but start very gently at first: http://www.osteopathclinic.com/exercises/lumbar.html
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