What Causes Lower Back Pain And Headache After Lifting Mild Weights?

Hi, may I answer your health queries right now ? Please type your query here...hi about 7 months ago i had to go to hospital because of sharp pains my chest and heart rate increased to a very high level i think it was caused by over lifting. it came suddenly but i felt a little be faint before it happened i think i was diagnosed with costochondritis and put on cocodamore and ibuprofen but not sure sure because it was a long name that i forgot recently i have been lifting fairly heavy things i work in a kitchen and i have to lift alot of equipment not all very heavy but mildly heavy in a short space of time. i have slight lower back pains and wondered if this could trigger it again because i feel a slight ache in my chest sometimes a have a slight headache and feel tired alot of the time although this could be down to anything was just wondering if you have any suggestions as to what i should do thanks