Do you use a fitness app or a weight loss tracker? Make sure you're eating enough. Bigger people need more calories per day for weight loss. You want to make sure that your body is healthy and happy. If you don't eat enough, your body will go into starvation mode and start storing fat instead of burning it. Which is the opposite of what we all want. I did a quick calculation based on your weight and height, and it looks like these should be your calorie goals.
I honestly tried to understand the fat percentage thing. I couldn't. What I understand is If I eat less and move more I get results.
I started on 1/3/16 I weighed in at 283 pounds. I am only 5' 5". My BMI was 47. I am morbidly obese. I write down everything I try to keep my calories between 1200-1500 a day. I am always cleaning, when I am not sick like this week. I wash down walls move furniture and shampoo carpets. I also dance my babies. I only drink water now.
At my last weigh in I weighed 270.4. I have lost 12.6 pounds in two weeks. It's normal at least for me to lose at a faster weight when I start. I then slow down to the couple pounds a week. I dont think I will pull a good number this week. I have been sick, so not moving as much. Also its my lady time. I noticed a one pound gain yesterday, I cried. But I didnt wavier. My calories yesterday was 1300.
My sister lost over a hundred pounds a few years ago and has keep it off. She was 275 and now 150. She didnt count calories just did portion size and always had sunflower seeds. I tried her way and failed. Each person is different. And has to do what works for them.
Oh and by the way every one is doing Great. Doing something and trying to make a change is better than nothing.
You need 1,805 Calories/day to lose 1 lb per week.
You need 1,305 Calories/day to lose 2 lb per week.
Also "morbidly obese" people tend to lose more weight faster, because they have more to lose. So I wouldn't worry about that 12 lbs in 2 weeks. Sounds super normal to me for your current weight.
And don't worry about weighing in on your period week. I can EASILY go up 3-4 lbs on my period because I get super bloated. Don't feel bad about that. It's totally normal. It drops as soon as the week is over.