So you should not take a pill from a bottle that says Motrin
and another pill from a bottle that says
Ibuprofen. Remember these are the SAME. The answer to your question, why is Tramadol not working is simple, it is not strong enough to control or ease your pain. There are also other muscle relaxants that may be more effective for you.
I highly suggest that you contact your PCP and inform him of your pain. Again if you are extremely uncomfortable you should go to ER to obtain pain relief.