Is it normal for a plus size woman to loose weight?

I am supposedly 4 weeks pregnancy and currently missed day 2 of 5 period. Tests are still showing negative, experiencing series of symptoms, includes morning sickness and nausea.

Due to worst case of nausea and upset stomach, had been eating waaaaay less food than I usually do. Because the food looks so gross, smells gross, and even taste gross. I don’t want to eat, if I do, I would end up puking. I felt like I lost a lot of weight due to this. Is this normal? First time ever I have a very flappy skins! 😳 only thing is hard is top of the stomach between boobs are hard to touch while everything around it is soft, and you play around with it. Never had any intention to loose weight because I am very content with my body being at 260 pounds. I heard that if you love food before, you will hate it... welp.. I love everything that’s good.. I cannot eat anything. I am hungry and I cannot get a bite without puking! Haha! *cries*. Even coffee smells like trash! T^T