pa advice nmn po.

Public high school teacher ako and 37 weeks nko pagbalik ngayong Monday Jan. 6, 4th flr everyday ang inaakyat ko na klase. from 10 am to 4pm. lagi din pong traffic lalo pag uwian, kaya nilalakad ko lng pauwi umaakyat din ng footbridge. mas best po ba kung mag early maternity leave na ko? or antayin ko atleast mag 39 weeks? pasok muna ko? pa advice please