Before we get to the results, I want to take a second to sprinkle some science on you:

A pound is approximately 3500 calories. Gained or lost, that does not change. Seeing a whoosh, in either direction, from time to time, is typically indicative of water weight.
And water weight? That's a sign that your body is processing what you have put into it, whether that be filtering salt and sugar, repairing muscles, filtering toxins, pushing through illness, etc.
Your body does not know that you are trying to lose fat, it just wants to keep you alive. That's all.