Could you be more specific what the "saran wrap thing" is? Are you wrapping yourself in it so that you sweat to help lose weight? If this is what you are doing, this is not the way to lose weight. Proper diet and exercise if the way to do it.
As for your welts, perhaps you are allergic to something in the saran wrap. Have you tried putting some Benadryl cream on it or taking a pill (follow the directions on the package)?
I would stop the wrap, and if this doesn't improve in a day or two, seek medical attention by a health care provider.
First I need to tell you to stop wrapping yourself in the saran wrap. I know what you are talking about and the only thing that it does is make you sweat. So the only thing you are losing is water and as soon as you drink again it just comes back.
The welts you have are also a result of the saran wrap. Once you stop doing the wrap the welts will go away. Take Benadryl to help with the welts in the mean time.
Yes Foggy is correct, the only way you are going to be able to lose the weight you what, is through a proper diet and exercise. What you are doing now is only going to cause you to have medical issues.
I agree with the other two posters - stop doing the saran wrap.
The welts may be an allergy to the wrap.
The way to lose weight is to eat a healthy and well balanced diet with lots of fresh fruit and vegetables. Cut out or cut down on junk and processed foods, fizzy drinks, cakes, biscuits, sweets, crisps, etc. and too much fats. Cut down on fatty and fried foods too.
Like flipper336 says the wraps are just making you sweat and by that you are losing vital fluids from your body. The weight loss is just temporary and you are not burning off the fat off your body. By getting yourself dehydrated you will become ill and this can also lead to you getting kidney stones.
In fact you should be drinking more fluids, like water (at least 2 litres per day). Fizzy drinks and juices contain lots of sugar, so you need to cut them out or only drink in moderation.
Exercise is also beneficial to losing weight and keeping your muscles toned as you lose weight. Any type of exercise that you enjoy is worth doing because you will keep that up. Going for walks and building up the length and speed of your walk will also help you to lose weight.
If you have a lot of weight to lose, talk to your doctor to send you to a dietician, or join a weight watching group that will teach you the right way to lose weight.
You are only 16 years old and most likely very self-conscious of your body image. We are all telling you that the saran wrap thing is not the way to lose weight and only causing the allergic reaction.
Things you can do, and I know a lot of kids your age do it, is to not have the soda and snacks that the others do. Instead, pack in your back pack some pre-cut things like celery, carrots, radishes, cucumber, and other veggies, etc. with a small container of peanut butter or almond butter or sunflower butter (protein). Drink lots of water as this helps give you the feeling of being full.
After doing your homework, get a friend or maybe your Mom to go for a walk. Put on your ear buds and make it a fun time and before you know it, it will become routine and you will be able to go a little further every few days (start out slow and work your way up; you don't have to feel like you are walking a marathon). If you feel like doing something crazy, go in your room, and turn on some music and dance (moving around is also exercise). No one will see you.
Encourage your mother to give you meals that are higher in protein (like chicken, fish, occasion meat, tofu if you are vegan, etc.) since they fill you up and eat less carbs and sweets. You can also talk to your mother about your concerns and have her take you to the doctor who can refer you to a Nutritionist (usually a referral is needed from the doctor for insurance). Sometimes there are nutritional classes in the evening for adult education that maybe you and your Mom can go to, especially if she is doing the cooking.
You are not the only one with this problem, but I know it can make you feel self-conscious. It helps to have someone to talk to and to do this with someone. You can also ask us if you have questions. Be positive and you an do this. :-)