Divorce during pregnancy in Islam un India

Respected All, I am a muslim man arranged married to muslim woman, since 14th Feb, 2016 but all this time my relationship with her has deteriorated. My wife is cruel to me and my family, abusing and trying to control everything at my home. She wont allow my sister and her children who is married to come home and stay. My mother and bhabhi do all the work at home, but she has for some reason told all her relatives that we mis treat her like a servant, whereas she is more or less living a good life. She has abused my parents, sister, brother, bhabhi when shes alone with me. Even after all this time, i have been trying hard to reconcile with her and apolozied for everything she feels is wrong and corrected or promised to correct anything she feels is wrong just to prolong our marriage, she hasnt changed. Now i have suicidal tendencies, and i feel like killing myself everytime she fights all night long with me. Accusing me of multiple affairs. Her worst came when she made her elder brother divorce her own bhabhi and all through that misguided me while accusing her of committing adultery and many other things. Now she is doing the same to her another bhabhi and asking me to again follow her in wrongly accusing her bhabhi of adultery and affair, (Start of her pregnancy) when i said no, she started torturing me and blackmailing me into it or else she will kill our child. Now after a month of this issue still going on, i decided to leave my wife when she is now 15weeks 4days pregnant. She is the most cruel person i have ever encountered. What can i do, some people tell me i cant divorce her as she is pregnant? Also, she and her family, with their past history, are not afraid of falsely accusing me or my family of anything worst. Your all kind help and suggestions will be much appreciated.