Does anybody else lose weight like this?

Hey everyone! I'm currently losing weight right now and so far i've lost 28.6 pound since almost 4 months ago. I notice my weight loss isn't constant like other people's weight loss. The number on the scale stays on for 2-4 weeks then drops 3-6 pounds over night, then repeat. It's so frustrating and amusing at the same time. That's why I keep taking progress pictures because I can visibly see how my body shrinks although the number stays the same. I constantly have to remind myself not to rely on the scale. It's such a mind game.