I'd like opinions from doctors especially?

I'm 17 and I have very small breasts, they don't even fit into a cup size (I have about a 29 inch underbust and I'm 31 inches, maybe 32 now around the fullest part). They don't look like developed, mature breasts either (they're very pointy and the nipples are always puffy and swollen looking). When I was younger I was made fun of and insulted constantly by asshole middleschool kids so I was very insecure. So when a friend told me that touching your breasts makes them grow bigger, I of course tried it. I used to constantly and violently squeeze and press them and pinch the nipples very hard. I did this especially around the time that my breasts would get sore when trying to grow. I tortured my breasts with underwire bras that were way too tight around the middle part because a friend told me wearing a bra all the time stimulates growth. I used to get pains in my chest that I thought were my heart hurting so whenever they would happen I'd press my hand to the area that was hurting and pushed and massaged til it stopped, and I now think it might have been my breasts trying to grow. I was also very unhealthy and clueless as to how to be healthy because my parents never taught me anything about health. I drank milk constantly and I hated water so I never, and I mean absolutely NEVER drank it. Just milk and sprite and occasional fruit punch. My diet consisted of mainly pizza, fried chicken, mcdonalds burgers, bread, deep fried chinese food, steak etc. and no vegetables or fruits whatsoever because I hated them and my parents never made me eat them when i was little. So basically I was very unhealthy. I never excersised and constantly felt lightheaded and would get head rushes whenever I stood up or even moved too much and I was constantly breathing heavily because I had asthma and I didn't know it til recently and i was out of shape because i didn't and couldn't really excersise due to my extreme unhealthyness. And despite what the description sounds like I was very very skinny, but with a mild potbelly kind of shape because I was constantly overeating but I had a fast metabolism. My mother did tell me she was a late developer and she has a C cup right now I think. I think she fluxuates between a large B and a C depending on her weight or the brand of the bra or something. She said she didn't really have much breasts til she was 17. I've been eating way healthier and drinking lots of water now and I've completely abandoned milk which I used to drink in place of water as my basic fluid. Ive noticed now that my breasts seem to be getting slightly bigger but are still very small. But anyways, could any of these things have affected my breast development and made them not develop normally?I'd like opinions from doctors especially?
Simple answer really, your breast size and shape was basically determined by your genetic make up at conception, though it is affected by your weight. As far as increasing breast size is concerned only weight gain, pregnancy and surgery will affect the size.I'd like opinions from doctors especially?
not a doctor but you could ask your mom to let you see a doctor.

How about the school nurse? Also, if you have any routine physical, usually at your age, doctors respect your necessity to talk to a doctor alone without your mom there if you felt more comfortable. I have doctors in the family and I assure you... they have heard it all! Your question would not be unusual at all and would be answered with respect. Go ahead and ask a doctor. If you are afraid of losing your nerve... print out your question from here and pass it to a nurse or the doctor! (And in my opinion... you are normal... but you will feel more comfortable to hear if from a doctor. )