I'm scared to eat junk food. please help!!?

i'm too scared to eat junk food, at all. About two months ago, i saw a nutritionist while i was on a cruise, and basically, he told me my body fat percentage (27%) was too high, when i was about 122 ilb at 5,4' He told me basically, that i couldn't eat ANY junk food, or fairly unhealthy food, or i would gain weight. So, it's been about 3 months, and since then, i've eaten 3 sweets total, and for the last month, i haven't eaten any because i've been too scared to eat them. I've lost weight (i'm about 115 right now), by eating 1200 calories a day, but i'm misearble basically. i haven't eaten anything processed since then, i can't even go to friends houses to eat anymore cause i'm too scared that they'll serve white pasta, i can't eat what my parents are having for dinner because i'm too unsure of the calorie count, etc. i'm a wreck, and i just want to be able to eat normally again (again, being before i had less than 27% body fat which at one point i did). I still have weight to lose, but i'm too scared that i'll gain a load of weight if i even take a bite of cake. Please help, cause i can't live depriving myself like this anymore.