Heres my problem..ive been bulking for about 2 months and i cant seem to gain a pound..im 170 lbs i want to get up to 180..i see my self getting bigger but when i get on the scale im still 170..i took nox2 and gained about 6 lbs then a few days later i was back to 170..i eat 6 meals a day and work out m.w.f..im taking creatine and protein shakes..should i buy a weight gainer? do they work?