First, welcome to the boards.

If you give us some more details we can probally give you a few suggestions.

What is your diet like? Tell us what you usually eat each day and what the macronutrient breakdown is (carbs, protein, fats).

What is your training like? How many days a week, what type of training, etc. Also what is your cardio like? If you are constantly running long distances and doing marathons this can have a big effect on your gains.

Once we get some background info we should be able to give a few comments..