Serious Mass 12lb

[cuteUsman]

Hi every body .. am new on bodybuilding.com , its been nearly 4 months since i have started bodybuilding. when i started body building my weight was 49kgs and my height is 5 feet 5 inches, after 1st month i started taking optimum nutrition "pro complex" as a starter it gave me 4kgs weight gain, the packing of "pro complex" was of 2.3 lb after 1 month it was finished. after that i reviewed some supplements and i thought to use some weight gainer so i selected optimum nutrition "serious mass 12lb chocolate" i started taking i, As its scope size is very large so firstly i took half of it and b/w meals and half scope after workout. its taste is just ok. I used it with milk,honey and some bananas to maintain maximum carbs and calories. i noticed my weight was fluctuating like when i started serious mass my weight was 53.5kgs then after nearly 1 month my weight was 55kgs. i was happy at that moment but after some time when i rechecked my weight i was surprised to see that my weight was 54kgs. after 2 months of using one day i checked my weight i saw it was 56kgs after some time (a week) i checked my weight again . it was again 54 kgs ! i dont know what is happening to me ??
please can anybody help me please am damn worried about my weight gain ! kindly please "bodybuilding" help me ..! i will be waiting for the reply !!!