Weight loss 39 weeks

Ken • Theo 💙🍀 9/1/20 ✨

I’m due 9/5, having a planned c section 9/1. I was averaging 146.5 for the last 2 weeks, I weighed 148 at my appointment earlier this week, and now my at home scale says I weigh 143. That seems like a really big difference. Is it normal to lose weight at this point?