Hi Welcome to HCM
I have gone through your query and under stand your anxiety
about it .
Dear it is part of growing up . your symptoms description show that process is on .Soon you will be alright .
You must know right age of puberty
is 13- 15 years . so there is still time .It depends on person to person And their food habits ,their mental state etc, which counts . So Need not worry about it . Let the nature take its own course .
And by the way , you must be in school , take care of your studies .
Yes I will suggest you to take care of your diet which should be balanced & includes proper amount of fibers , proteins
, minerals ,salts and water
And Do exercise Jogging ,Yoga
and Pranayam to tone up your body . as you must be aware , healthy body contains healthy mind .
if you take care of all this you will become a healthy beautiful damsel one day so no worries . All the best .
Dont hesitate to come back if have any further query.