maternity leave immediately after joining service

[aparna]

Hi. I am a doctor. I have joined a government medical college in kerala as asst professor . I was 8 months pregnant while joining . And due to health related issues i availed maternity leave right after joining . That was 2 months before delivery . so i get only 4 months after delivery . is it possible for me to get leave for 2 more months ? and they also said that as my service is less than 1 year, i am not eligible for paid maternity leave..is it so ?