Solo Parent sa 1st born

I'm 12 weeks preggy with my 2nd child while i am a registered solo parent sa panganay ko.. Will i get 120 days of SSS maternity benefit kung iaaknowledge ng father ng baby ko itong ipapanganak ko sa October? Or magiging 105 days lang talaga at mavo-void ang pagiging Solo Parent ko? Anyone na naka-experience na po?