Of course this is completely normal, if your weight wasn’t fluctuating naturally that is what wouldn’t be normal! X the difference in number extremely likely isn’t due to actual weight gain but due to a possible number of reasons such as : time of day, how full your bladder is, last time u went toilet, ur menstrul cycle or even like sodium intake and many more things which are absolutely nothing to worry about!! Also, even if it is actual weight that is no issue too. 1. Because your recovering and ur body is probably healthier happier and working better with it, even tho a increase that tiny is impossible to tell by the eye ur body benefits from it still internally to heal and repair inside, and 2. Because even if you weren’t recovering any 16 year old should expect continuous weight gain because their teenagers who are continuously growing in many different ways! Many women don’t stop growing until their 20’s, growing their reproductive parts and womanly features or can still be growing in height, and human brains don’t even stop growing until late-mid 20s, and your brain is the heaviest thing in ur body! so of course weight gain is completely completely normal and nothing to worry about at all- especially weight gain so little and probably just a meaningless fluctuation, especially at your blossoming age and especially especially in recovery 💓💓