Okay well my WHOLE family say I need to lose weight . I'm 4Ə I weigh 101 . My stomach looks a little bit big . I wanna lose that . A girl at my school says it looks like I'm pregnant . Any weight loss tips ?

Do extra PE Exercise!

read about it here
http://up.vc/bwl15
open the second and third brown link
there on right side for more info bit.ly

First of all, DO NOT go on any of those "diets" you see or hear about. Those are generally very unhealthy for a fully developed adult, let alone for a preteen who is still developing. Some of them have even killed people.
You want to eat healthily. Many people will tell you to cut out red meat and eat white meat, eat only fruits and vegetables, etc. But, those aren't healthy for you, either. You need to get all the important nutrients. You want to eat a balanced meal each meal. DO NOT skip ANY meals, this is very bad for your body and causes you to gain weight. You need three square meals and one afternoon snack a day. If you have something like acid reflux, six small meals a day is healthier. For your meals, you want a "meat" (beef, pork, chicken, turkey, peanuts, cashews, almonds, liver, green beans, etc), a "grain" (corn, potato, rice, noodles, bread, crackers, cereal, croutons, etc), a "dairy" (egg, milk, cheese, yogurt), a "fruit" (tomato, apple, orange juice, apple sauce, raisins, etc), a "vegetable" (spinach, carrots, lettuce, artichokes, asparagus, broccoli, cabbage, etc), and one or two glasses of water. These food groups should take care of your fat needs. You do need some fat. Make sure to choose a variety of foods when you make a meal. Choose different types of meats and different fruit/vegetable colors because the color difference shows you the nutrient difference. You want more grains than any other group, unless you have a condition such as diabetes. If you have a health concern, ask your doctor instead of listening to me.
Activity-wise, do a reasonable amount of activity. You don't want to suddenly throw your body into a fully athletic lifestyle after a sedentary (rarely active) lifestyle. The generally accepted method medically speaking is to exercise until your muscles burn. When you use your muscles, you rip them and they need to heal. If they're weak, they need more healing. Listen to your body when it sends you signals. Drink plenty of water while exercising, do not overheat, and wait half an hour after eating before exercising. It's best to start with activity that is easier on your body, such as walking, jogging, swimming, riding a bicycle, or skating. These provide strength for your muscles as well as helping your lung and heart health, and they burn a good amount of calories. As you exercise daily (unless too sick) until your muscles burn, you will gradually be able to exercise more. Do not listen to people who say to exercise until you collapse, that is too harsh on your muscles. As your muscles get stronger, you can add more intense exercises. Stretching your muscles is important, as well. Ways to stretch them include yoga, touching your toes, reaching for the ceiling, etc.