Bouncing Again & A Possible Pattern

The number on the scale has been bouncing again for the last week, which is frustrating to say the least. TMI, but I think I'm starting to see a pattern. I had sort of come to the conclusion that I seem to lose weight at the end of one month and beginning of the next, then mid month I stall. This last two cycles though it seems that the number starts to rise mid cycle by about 1-3lbs, combined with me feeling completely irrational, upset and angry, which is what happened over the weekend lol. Then last month all of a sudden I started living in the bathroom for potty breaks day and night and being absolutely starving all the time, followed by the number on the scale dropping back to it's original number and then carrying on down for a small whoosh. Well the potty breaks and being ravenous started overnight and the scale was back to it's original number this morning. So I'm hoping that I'm going to see a new low in the next couple of days! If it does happen then I really think I might have hit upon a pattern, which might make the bounces more bearable, I say might lol. I'm still contemplating trying to go back to weekly weighing only, but it never seems like the right time to stop getting weighed the next morning. We are away from Mon-Fri next week and I won't be able to weigh then, so maybe I could use that as a starting point?
I'm happy to say that I ran 8k on the treadmill in 59.39 yesterday so my furthest yet in under an hour. It seemed harder than the first time I did it (7.95k in 60mins) but then again I had no-one to talk to the whole time. So this combined with the faster 5k's has me hoping that I really am making some progress. I'm taking my running kit with me next week and hoping to at least go for 1 run, hopefully more, so we'll see what effect all the training has had on my outside running. I still haven't got to the point where I can just run and enjoy it, each run still seems so hard and it's sheer stubborness that keeps me going, but the feeling afterwards is worth it, and I am holding out the hope that now I'm running further, 5k might start to feel more enjoyable soon.