Do not worry too much about the disc bulge , If we pick and scan 100 people from a street trust me 85-90 would be having a bulge. The symptom you have should be co-related with your degree of bulge. If the pain is confined to your back, do not worry go visit a Physiotherapist he/she will treat you with few modalities and teach you with exercises for prevention (this is the important part so you dont relapse with back pain
). There proven research that 80-90% of back pain is mechanical in nature and mostly to do with your lifestyle.