The rate of maternity benefit shall be equal to the standard benefit rate. Standard Benefit Rate means average daily wages obtained by dividing the total wages paid during the contribution period by the number of day for which these wages were paid. In other words ESIC provides 100% of average daily wages in cash up to 26 weeks in confinement and 6 week in case of miscarriage, during maternity leave and 12 weeks for commissioning mother and adopting mother.
You may pl go through the literature on maternity benefit from the website of ESIC so that you may be able to know about the benefits available to you.
Information - Benefits | Employee's State Insurance Corporation, Ministry of Labour & Employment, Government of India
You may contact the local ESIC office for confirming the benefit due dates.