Check out Big man on campus workout plan, by steeve cook it will help you a lot and you will find all the infos on how to eat well when you are on college
I guess the problem you are facing is just on your mind, cuz you heard or someone told you that you won't have the energy to workout if you cut the carbs, seriously, if you eat fruits, cheese eggs...
Check out the website, it has amazing workout plans, and you will see great results if you stick to one, and don't forget to eat well, each 2 hours i recommend
I think you ate something very sweet that day or you took a lot of sugar during that day, I recommend you check your bloodsugar on the long run and see if it's high or normal
Man the websites has many workout plans, plus you can choose your category if you are a begginer or else, and each one will give you amazing results if you follow it.