My baby is 5 mth now and I want to join back for work. Am I being selfish , should I wait till he is 1 or 2 yrs?

no mommy you are not selfish at all, but if you feel your baby is too small, maybe you could wait a little longer. i started working again very soon after my elder one was born. for the second baby, i chose to do it later. the decision is entirely up to you. if you want to start once your baby is weaned, you could do that. or, if you have some good caregiver options available, you can start now too.