Mental Harrasment during Pregnancy

Dear Sir I am 7 months pregnant and working as professional in one reputed company since 3 and half years but company policies are completely against all employees. I was hospitalized two times during these 7 months and worked full time from home and hospital but they deducted my all leaves saying we have no policy for Work from home and because you are senior and you have to do the all work done. in our company if we come 2 mintues late in office then also they mark half day leave which is adjusted against your earned leaves. worst part is I am so much depressed about my health and still continuing office so that work may not suffer but still being pregnant our office has no facility like food or conveynace if we sit late for work. also it is height of torture that I have my EL balance and CL balance but still they deduct my salary just because my manager has not approved that day leave( actually we need to applied on internal portal on which we need to choose his name, there are two names appears of the same person one for chineese and one for indian but mistakenly I choose approver as his Chinese name and he didn't see the same in his mail box to approve.) but it is also not my fault.it can be happen by mistake by anyone. but HR saying they will not refund my salary. i am so much dipressed and ue to that my health is getting affected day by day. now you please suggest me that if I file a complaint against them how much compensation I can claim which cover my 6 months leave amount and my medical reimbursement. Regards ruchi garg