Need advice

So I weighted myself yesterday morning and I was at 199.8 and when I weighed myself this morning I was 196.6 (I checked it 3 times) I’m currently just about 33 weeks pregnant and I ate ALOT yesterday so I know It’s not because I didn’t eat enough. I started out this pregnancy at 202 and lost about 14 pounds in the beginning but then stayed at around 196 for the past 2 months. Should I call my doctor about this weight loss?? Or is this normal? This is my first baby so I’m clueless