Thank you for your query.
It is very common to have breasts of different size.
You mentioned that you have had periods of two occasions. In the initial few years it is not uncommon to have irregular periods
which become regular over the next few years.
Though you said that you had intercourse I presume every thing is normal. Nonetheless it is better to get yourself examined and get your hormonal
profile done to be sure of the status of the hormone levels. Following the report of the hormone levels your doctor can take a call on your hoarse voice and may refer you to a speech therapist for the needful.
I hope I have answered your query to your satisfaction.
Wishing you all the best.
Rajiv K Khandelwal