As stated above, you need to contact professors and basically ask if they need help and if you could contribute in some way. Look at descriptions of various research projects that professors have going, and see if any of them interest you.
Also, you do not have to limit yourself to typical bench (lab) research, even though this is probably the most common type of research among pre-meds. You can also do clinical research, which commonly involves working directly or indirectly with patients and patient data. In this case, you'd probably need to contact clinicians, so if you're near an academic hospital or medical school, then that's an option. You can do public health research, in which you look at broad-scale community interventions, assess their effectiveness, etc. If you're near a school of public health, consider contacting professors there. There are more options, such as humanities research. Having pursued all of these research paths throughout college, I can assure you that they are all very possible. Bottom line: Figure out what interests you, contact professors and/or clinicians actively doing research, and go from there.