1. You need to check your terms and conditions of your appointment.
It seems that 15th March, 2010 to 20th June 2010 is training period and probation period is 2 years from the date of 21st June 2010.
2. May or not. Your reporting /competent authority, service conditions, appraisal, performance, shall determine that.
"Every women employee who has actually worked in an establishment for a period of at least 80 days during the 12 months immediately proceeding the date of her expected delivery, is entitled to receive maternity benefits under the Act"
"A pregnant lady on probation is entitled to maternity benefits as per the Maternity Benefit Act, 1961."
Therefore if you qualify you should avail maternity leave.
Valuable advice of learned experts and members is sought.