My wife is not living with me since 2years

I got married according to Hindu tradition in may 2019 and my wife got pregnant in June 2020 and she left to her parents house and she is not willing to come back. The issue was in 2017 I had a girlfriend and we broke up in 2018 and not in contact.. my wife checked Facebook and Gmail profile and got few messages, she did this because she got a gift that exgirlfriend presented and I had not disposed the present as I had forgotten.I had explained and my wife got convinced. Keeping this a side,let tell explain a small incident before she got know this .. our marriage is inter caste and my wife belongs to my mom's caste. Long story shot she is not willing to accept my father family as we are close to them. she fought with me when my father s family were there and called up my father in law number and left home.she came back after 3mon when she had returned her attitude was completely changed. She was against my parents & not ready to say with my parents. Now she is threatening me of affair