Has anybody else noticed that their baby bump fluctuates? I'm aware bloating can cause this however,…

Has anybody else noticed that their baby bump fluctuates? I'm aware bloating can cause this however, what about when you're not bloated? I can be super round and not bloated plus my bio will be slightly lopsided due to my jellybean chilling in a certain spot or be beyond bloated and barely noticeable.. I'm also a very tiny person (as in my normal weight is 90-92 lbs pre baby).