question please help!

okay i have lost 75 pounds and i am now 125 pounds my father (who is a doctor) says that he thinks i am little to thin and i should gain 5-10 pounds , anyways i am trying to maintain and i am doing that okay but i am eating like 2000-2200 but i am STARVING constantly like when i eat a meal i dont get full i just feel hungry and if i do get full im hungry 1 hour later now u may say o too many carbs or whatever but let me give u and example of something i would eat okay like a sanwich with low fat meat and some cheese and a fourth cup avacdo and a knudsen cottage double and a piece of fruit so thats like 8 grams of fiber 33 grams of protien and 15 grams of fat and i felt hungry 30 min later, now this isnt like binge cravings this is actual hunger like i feel weak and irritable and my stomach feels empty, yet i am mainting not losing my theory is 125 isnt my natural body type 135 is and my body doesnt think there is enough calories or fat around (i also dont have my periods anymore and have trouble sleeping and my hands are really vieny and bony) so is my father right? should i gain weight? i mean 125 isnt underweight but i feel crabby and hungry 24/7 even on 2200 calories. o btw i am also 15 years old 5'6.5 and active (1 hour of vigourous running daily)

If you had regular periods for a year or more before you lost the weight, then not having them anymore is your body telling you that you don't have enough body fat to support/protect a fetus. Therefore your body stops producing eggs until you gain more weight or body fat.  If your periods were not regular before the loss, they do start and stop or change during puberty as a normal occurance, but once they have been regular for a year or more, change in them usually means something is up. 

yes it has been like 5-6 months since i stopped loosing weight and no period

In my opinion, for what it is worth:

This is a case of FATHER KNOWS BEST

Eat, see how you do with an extra 100 -200 calories a day then go up from there if you still don't feel right.  I am sure he would not tell you to gain some back if he didn't feel it was best for you.  If after you do it you don't think it was the best thing for you then lose it again.  Follow your body mostly though, it will guide you to where you should be, just listen to it.

I am your height (though older) and I weigh 135.  I work out 3-4 times a week and try to consume roughly 1700 calories per day.  I just recently switched to "maintenance mode" because I got tired of thinking I needed to lose those "last few pounds".  I lost a total of 40 pounds.  My point is, I have been as small as 120 pounds but that was not healthy for my body.  I feel healthier and look better at 135.  You should listen to your body:  if you feel hungry, you should eat.  Not binge, or go nuts on junkfood, but eat healthy.  Listen to your dad!  Good luck and God bless!

I would just like to mention that your body does not "stop producing eggs" when you are underweight/underfat.  Your body stops producing eggs after week 19 in your mother's womb.  All the eggs you will ever have are made while you are still a fetus.  What happens when you do not have enough fat to support a developing baby is that you will stop ovulating, hence the absence of periods.

The hunger and other things you describe may also be a sign that your body wants more carbs. Your body uses carbs to produce serotonin, which is the chemical in your brain that makes you feel happy and calm.  Without adequate carbs, people often get irritable and depressed, start craving carbs and binge.  That's why overweight people binge on white flour and sugar, it is a drug, but also a vicious cycle that leads to more depression (it's complicated, about insulin resistance and so on).  So IF this is you, be sure you get adequate complex carbs (whole grains, fruit etc) which give you a  more even, longer lasting,  serotonin level. This is the finding of two doctors of MIT, by the way. 

Some things can block serotonin production like too much protein,  artificial sweeteners and monosodium glutamate.... or so I have read. All of this is very consistant with my experience.  I did the old Weight Watcher's plan almost 30 years ago, extremely low in carbs, high in protein, and lots of artificial sweeteners used as crutch foods. I reached my goal, but got depressed, was starting to binge and tried bulimia a couple times.  Now I just count calories, choose the foods my body seems to want (mainly carbs), keep white flour and sugar to a minimum, use almost no artificial sweetener. It is much calmer, much easier, no craziness.

I also agree about your periods. One of my daughters didn't get her period because she is natutally slim. So she had to go on the pill when she was 17 just to get her periods. When she does she gains a little weight, and has her cycle. When she goes off she immediately drops five or more pounds and her periods stop. One of the most important reason to have your period, is because the hormones help with the formation of your bones, and these are very critical bone-building years... after age 25 or so, it 's all downhill.

sounds like the exact same thing i am going through. i am also 15 and have recently dropped about ten pounds mainly due to a more active life style and i am also lactose intolerant now. i have also stopped getting my period for a bout 3 months now. i know i am not as strong as i use to be. therefore i have decided to start by gaining back 5 pounds considering i am five foot nine and only weigh about 123 pounds. from there i plan to see how i feel

I'm not certain, but aren't you supposed to eat a little more when your body is still growing?