Note: initiating a separate post because you replied in irrelevant posts.

sister, I can guess how worried you might be about your future and due to your current habit. but I have one sincere advice for you that just forget what has happened in the past and focus on the present and future. 

You have to study now and make your future bright. The thing happened to you in your childhood or past, also happened to others too. So don't worry about that and just think kai Allah dekh raha hai woh bara raheem o kareem hai. us ko sab pata hai. just offer prayers and focus on your study with fresh mind. agar yeh sochain aen bhi tu  Allah ka naam lai kar mind sai jhatak dain aur koshsih karain kai aisee batain jo aap kai future kai liye nuqsan deh hon kisi ghar walay sai discuss zaroor karain, atleast with your mother. jo baat pareshan karay un sai discuss karain. life main buhut kuch ho jatah hai is tarah itna pareshan nahin hotay. 

aap bilkul theek thaak hain, aur perfectly healthyhain. yeh sab batain chor dain, aur after some weeks daikhain aap kitne fresh feel karain gi. just concentrate on your studies.

if you have any other confusion feel free to ask, but dont repeat.