All thanks to the Pandemic

In 2018 at 27 I took over the family farm, as the youngest of 3 and only boy. Both sisters were married and university graduates and neither had interest in farming, other than short holiday visits. My father (64) had heart trouble and so he and my mother moved to the city to live closer to my sisters and better medical care. I was already married and had a son on the way. My family is quite well-off, and the farm was only part of my future inheritance. Just delivered earlier, my family still visited as was normal for them. Then in 2020 the pandemic started, and they couldn't come as normal. My wife's family (mother and sister) lived in the nearby town and lost their jobs due to the pandemic. So, after getting special permissions, they came out to the farm to stay with us. As the lockdown dragged on and with my wife again pregnant in her last trimester. She stopped sex between us but got her sister to provide sex to me. Her sister is 2 years younger (25) plain and slightly overweight like my wife was when we married. But their mother (48) asked to be included as well. So. I had 2 willing women to fuck, with the approval of my wife. Who also joined in except for actual intercourse. Just after the ending of the lockdown ended, our daughter was born, and my sister-in-law got pregnant because we celebrated a little too much and forgetting to take precautions. Now I've 5 children 3 with my wife and 2 with her sister.