Why is my body fat increasing?

[MattyR123]

So about a month ago I was on 3000 kcals a day and in one week I recorded my weight go from 123.8lb and 8.8%bf to 124.2lb and 8.9%. Then I droped my cals to 2700 because I wanted to minimize my fat gains and maximise muscle gains. So last week I recorded my weight at 126.8 and 9.7%bf, and this Sunday I was 127.8lb and 10.2% bf. How is this possible if I cut my cals by 300?!
I'm eating pretty much the same things(if not healthier) just in smaller portions.
Also I'm using one of those body analysers that measure body fat, which I know are unreliable, but I take the readings at the same time and conditions, so why has my bf gone up.
Btw, I'm a beginner, I've only been lifting for a little over a month, but I've definitely seen strengh gains in the gym. Also, I do like to really overindulge (7000 kcals!) about once a month, and this happened before I took the reading on the scales, but usually I go back to normal weight within a few days, so I'm guessing that the bf analyser is wrong.

[zaman1991]

What are you measuring your bodyfat with ?

[texicus]

You're obviously still eating over maintenance and unless that body fat test was a dunk tank/other form of accurate test (not calipers or impedence), accuracy down to the tenths place decimal isn't going to happen

maybe stop ****ing overindulging 7000 cals once a month you're already eating a decent amount every day. if you're only 124lbs and aren't doing much activity outside of lifting 3,000 kcals a day is a lot.