any advice will help!

so the website says my caloric intake should be 1600 calories a day to lose wieght im only eating 1200 and have been losing on this calorie intake but i workout hardcore 7 days a week and burn about 400 and recently have found myself hungerier as the days go by i want to up my intake to 1600 but im scared its just going to make me gain instead of lose idk how to get over the fear of going above 1200 and eat 1600 please no negative comments i just want people with good intentions to comment to give you a break down of my days 

breakfast 

banana 105 calories

better'n peanut butter 100 calories

lunch 

turkey sandwich with whole wheat bread turkey lettuce and a orange 340 calories

snack tuna and crackers 200 calories

dinner homemade pizza 400 calories

i would like to add another banana to that and some more peanut butter that would add a extra 200 calories but i feel like it would just make me fat! 

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