This happened to me when I pulsed a-drol... It was great but that first run w/it I was being real cautious and actually did ok - but Knowing what I do now - for me I'd go 10on 10off and repeat... I stayed pretty lean considering that clean bulk - bug I didn't eat big enough...
If I ever run orals I either like to pulse them now(d-Bol/it drol) or backload it and finish strong and use it to break a sticking point if running a longer/standard length cycle...