Maternity Benefits

Naka LOA ako nagstart March 21 up until EDD June 20 pero nagfile ako MAT1 thru my employer since employed ako. Ask ko lang paano yung contribution ko from April to June? Wala pong hulog yun since LOA ako? If wala, makakakuha parin ba ako Maternity Benefits? Sino po nakaexperience nang ganito po? TIA