Rough sex, tears causing itching for weeks plus extra discharge with a tiny odor

okay well im 16 years old and ive had a boyfriend now for 11 months, who is very faithful and he was my first.. ive only had symptoms now for a few days so i know its not a std because there hasnt been any for the 9 months we have been sexually active. some months in the middle of my cycle i get heavy discharge which i am getting now so thats not my main concern but with the itching and slight burning(which i believe is just because of the scratching) im starting to worry myself ....

Notes:

1. i have heavy discharge ( which isnt always unusual)

2. i am on oral-contraceptive ( yaz)

3. i know it is very uncommon for it to be an std because ive only been with one guy and i had no problems for 9 months, plus he is diabetic so if he had an std it would be very obvious to him

4. there is itching , and a slight odor , i dont remember if the odor is always there , not a stronge odor by any means.. but there are tears on the inside of my vagina

5. i had very rough sex a few weeks ago , lots of tearing to the point of alot of blood , im only just noticing itching now

please help me !! im very scared and tend to worry alot about nothing ! i REALLY dont want to go to the hospital about this because i am obviously nervous to speak about it at my age and was touched innappropriately by a doctor last time i went so i dont want to go unless i really need to

Thanks !