I say stick it out, get out of living with the in-laws as soon as possible, and seek some professional help from counselors. No offense to the ladies but pregnancy tends to make them..... well for lack of a better word crazy. I love my wife. We have been married for 10 years and have 2 kids. There have been some ups and some downs as with any relationship but, sticking it out is important. Don't ever let anyone put you down for seeking help. We are doing it for our weight managment issues through surgery so why is getting help from a counselor any different? There are plenty of free and low cost counseling services. Remember parenting is hard. And even as fathers the parenting starts when your wife gets pregnant. For my wife it changed her during and for a year after each pregnancy. For one thing sleep becomes much harder and that can be problemlematic. Also, remember your wife is probably gaining wait, a good thing when your pregnant, but that can make them feel insecure especially if it is at a time that their spouse is losing weight and getting a lot of attention. But, think of this, if she married you at 300 she is probably going to stick with you no matter what because she loves you. I give my wife props becuase she married me as the ex football pro who weighed around 225 lbs of pure muscle. Now I have degenerated into a 370lb lazy couch potato. But, she has been through my side. Perhaps it is becuase I am getting older, I am 35, but I want someone who is going to be by my side in the good and in the tough. Just my two cents. Either way good luck and best wishes.