Help!! Did i eat enough today,?

Your family is right. You didn't eat enough. It's fine to be vegetarian/eat healthy if that's what you're going for...but you need to remember that protien and healthy fats will keep your body functioning long term. Foods like almonds, avocados and types of beans will give your body plenty of fuel and will not cause you to gain weight. The weight you lost recently is likely water weight. Since you've eaten less your body has expelled the extra water it normally used to digest the other foods that it normally expects. You will find that if you eat healthy foods every every two hours. So, that'd be around 200 cals. at each mini meal, you will keep off attacks of the munchies and cravings. Healthy eating guides can be found online or through various books. For example, the Body for Life series, P90X or Eat Right for Your Blood Type have examples and explain how to eat steadily.