Flatlining/downward swing

Hey team,

Had a great first month of VB. decent profit of 1300 from initial bank of 800. However over last 4 weeks profit has flatlined - with profit hanging around 1250 and having peaked at 1500 and troughed at 1100.

Is this swing natural - and over such a long period - 4 weeks Averaging 100 bets per day?