The 15 you lost was likely a lot of water, best guess. Losing the two could be a number of factors especially for a female. Just my opinion but as a woman and if you aren't going to count cals (not saying you should). I wouldn't even worry about the scale if you know you are generally on point diet wise. You really won't have enough information to determine what is working and to what extent. Trust the mirror and stay consistent.i don't know, i wasn't doing keto or anything that required micronutrients, just was doing phase one of SBD and not eating the foods they said i couldn't. i want to try a keto diet, but i have to be realistic, i know that i'm not going to count macros for longer than 3-4 days, it's not my style. i do best with portion control and/or simple avoidance, points, cals, etc just aren't my thing