Fyi weight lifter here, and we bulk and cut pretty regularly. It's all about changing what you eat more than how much. If you're trying to gain do small swaps like adding cream to coffee, add peanut butter to a protein shake or have a little extra on your toast, cook with healthy oils like avacado or olive instead of cooking spray, switch chicken/fish meals to beef/pork. Bagel instead of english muffin. Whole eggs instead of egg whites. It'll add up pretty quick.  Although, if you're male then 12% bf is totally healthy! If you need more tips let me know. =)