How can husband protect himself and his family if her wife file false complaints against him.

Hi, I got married 1.5 years back and have 4 months child. I and my wife both are software engineers. my in law family interfere a lot in our life and my wife don't listen to me, always says they are my parent, u don't consider them as your parents thats why whatever they say u dont like. 4 weeks back my wife got suffered from PIVD disease (Severe lower back pain: disc slip) and we were in hospital for 5 days. after getting treatment from physiotherapist for 3 weeks now she started getting better. Now my father in law came at our home and said main to apni beti ko lekar jaunga hmare babaji thik krenge ise. I said she is not able to travel, pain is not gone fully, he said m to lekar jaunga aapke doctor ko kuch ni pta, he shouted on me and my wife didnt say a word, my wife said if my parent will ask me for die, i will die unhone mujhe pichle 30 yrs se pala h. my father in law was not listening a single word, and same wife too. actually i felt bcos my father is no more with us, to they want i should always listen to them apni selfrespect bhul jau. i asked my father in law, abhi lekar mat jao bahut pain h he said main to lekar jaunga aapka jo decision bta dena, aapke doctor ne thik ni kia h, hmare babaji 22 days se path kr re the iske liye usse thik hui h. ab i and my wife are not talking for 5 days. and she is in her mayka uska pain kafi bad gya h bcos of travel, her parent are always saying tera husband teri sunta ni h dekh le, please suggest me some right things