Is it worth being a medical lab technician or technologist? I think it would be a suitable career in case I get rejected from med school (which I prob will with my grades so far)
Worth it is in the eye of the beholder.
According to BLS, the job outlook is positive for medical technologists
http://www.bls.gov/ooh/healthcare/medical-and-clinical-laboratory-technologists-and-technicians.htm
but the job market can be spotty. (IOW, you may not be able to find a job in certain highly desirable locations where there’s lots of competition.)
http://explorehealthcareers.org/en/Career/28/Clinical_Laboratory_ScientistTechnician
The job may require obtaining licensing/certification through professional organizations.