SICKNESS BENEFIT

I was advised by my OB to take a leave on March 20, 2020 panay panay na kasi paninigas ng tyan ko and I was taking duvadilan for a month 'til now. Btw, my EDD is May 7, 2020. My question is, pwde ko kayang ma reimburse or ma file as sickness benefit yung March 20 up to May 7, 2020 ko? Since may med cert ako na sinasabing pinag lleave na ako ng OB ko? Thank you :)