My sleeve was on April 16th so I have just gotten to solid foods! I keep weirdly fluctuating in weight from 199-205, and i just keep going up and down. Is that normal? Is my scale being weird?
Also, ladies, could it be my period? I just need to know so maybe I can change something.

Weight flux is normal ESP when you first start off on solids. Your body is going to need some time to readjust. Just as long you know you are hitting your intake goals and are getting all the exercise you are supposed to be, you'll be fine. You can be losing body fat and not lose weight, as odd as that sounds. There were a few times where I gained around 2 lbs in a day but lost body fat. So don't worry too much, just keep doing what you are supposed to be doing and everything will be just fine. And yes, your period will cause you to retain water, thus, extra weight.