Small breast size. Could help me out.

I am 24 years old. I am from Mumbai. I have been skinny my entire life. So when I turned 17 I decided to gain weight. It took a few years and now I have a good BMI. I weigh 50 Kg and my height would be around 5'5". The main concern is maybe because I was skinny growing up, my breasts are still underdeveloped at this age. They grew a little after I gained weight but they are still very small. I know pills and creams don't really have a scientific evidence and so I never tried them. I have fenugreek/fennel tea every day since 3 years. And i massage my breasts twice a day (started about 2 months) But still I don't see any difference. I would like to know if Breast enlargement Vacuum cups really work. I would like to visit a doctor to know more about this. As I would want to try a few things for my breast development before it's too late. Please if someone could help me out.