Numbness can be from a bunch of things.
Most commonly it's from nerve root compression, most commonly disc bulges. When i say disc bulge, don't freak out, 40% have asymptomatic ones.
ANti inflammatories arent doing to do anything for this, actually if there is a problem they will slow the healing process down significantly.
What you need to do is goto someone competent with this stuff and actually do the proper physical examine to determine what this can be....