just finished winny, still on sus, I've lost 3lb while on a bulk, is this normal?

[951thompson]

Hi

I'm on a cycle of sustonon 250 wk 1-11
Winny wk 1-3 (finished)

I've made some decent gains, I've put on 11lb but have now lost 3lb since finishing my winny, is this normal? Is it water? Should I up my calories?