Is it a concern that i have had my mobile phone beside my bed for two years while co sleeping with my baby?

Not about phone !: I have more concern about co-sleeping. The phone stuff is a myth. Co-sleeping with infants & toddlers is a defined risk & many kids die yearly strangled in their bed coverings.

Jury's not in yet,: Retrospective studies of children with brain tumors couldn't rule out an increased risk. Prospective studies haven't been published yet. One study showed kids absorb twice as much radiation from cell phones as adults because of their thinner skulls. Bed-sharing impedes typical 18-24 mo. Development of independence & self-calming skills. Aap.Org has ways to teach him to fall asleep in his own bed.