What should i do to lodge a FIR and under what sections of IPC

Hello , i am a Force personal at central forces .I got married to a upper caste and my marrige was love and arranged though since marrige my in laws were not in favour yet we got married and shifted to new place .As i am well educated i refused to give any dowry or gifts ,this was not pleasing to my in laws so After marrige my in laws started having thier influence on my husband through phone calls which caused a lot of tension between us .Last year i got my posting in another city where my husband rarely visited and whenever we met we had a lot of fight because of in laws .In last 3 yrs my husband not even settled to have any baby due to financial insecurities .Now my father in law died of heart attack and mother in law started influencing my husband out of sympathy,i didnt got leaves from my service inbetween my husband and mother in law started living together and started to giving me advice to seperate mutually .Now i felt mentally tortured for 3yrs and with no family security a ..i live at my parents house and at my govt quater since last 9 months ,my husband was paying a loan emi till last month and now he stopped it too ...i want know what should i do legally because they have played with my life since those years