I'm so sorry to hear that! Blighted ovum, that's terrible
How far along were you? After this last loss I had, I got so bloated. I felt so fat and I gained 5 pounds in 5 days! I had gained 0 through out the entire pregnancy so that was sad for me. But then all of a sudden, today I weighed myself and it's all gone. I think it's stress for one. And then when your body is stressed it gets inflamed. So like your muscles and bones/joints all get inflamed and that adds weight too.
It's such an awful thing to experience

Tomorrow will be a week for us so I'm right there with you. Hugs