1.Female employees are eligible for 12 weeks (84 days) maternity leave, which can be availed by splitting the ML as 6 weeks' prenatal leave and 6 weeks' post natal leave. There is also a proposal before the Government to enhance it to 28 weeks.
2.Earned leave is leave earned by the employee after serving the employer satisfactorily for the given period. An employee will earn 2.5 days of earned leave for each and every month worked totalling to 30 days in a year.
3.Since you have joined this organisation very recently on 04th March 2016, you may not have that many EL to avail the same starting from [deleted]. Therefore you can apply for earned leave which you are going to earn later by applying for leave now, as per Fundamental Rules "LEAVE NOT DUE' and get sanction for the same from the Competent Authority.
4.You are eligible for 'LEAVE NOT DUE' and in case the delivery occurs before 22nd during other leave make an application to the Competent Authority to treat your earlier leave as pre-natal leave under the maternity leave act.
5. Even if you are under 'Leave without Pay', based on the medical certificate, you can request the competent authority to treat the same as 'Maternity leave' with full pay if the situation calls for it.