Hi sweetie, would you like to swap breasts with me?? LOL
OK seriously now, you don't need to feel bad about them, even your BF likes them the way they are.
Let me tell you something about big breasts, they reallly aren't practical, it's like you always need to choose carefully what you wear and feel uncomfortable with lots of kind of bras.
I agree with you, they might look sexy sometimes but some other times they turn into eeeewww disgustingly huge, big, loose and just not much to look at!
I can't believe I am telling you this in a post that the world will read but I will, once you get pregnant, and breast feed, if your breasts are already, they will get bigger till you can hardly see the corner of the room, they will look ugly with veins decorating them and once you're done lactating and the milk goes away, they won't be nice and rounded, they will eventually look more like empty socks! Seriously, socks!
But as your breasts are not big, then there are many options to get them bigger such as wearring padded bras as you do, I'm not sure if you thought of silicon but I wouldn't advice as it affects the sensation and has many side effects on the long run, you can also wait till you get married and pregnant god willing and watch how your body changes, they might look much better after that
Honestly, I won't tell you this just to make you feel better but you're blessed and eventually, 34A is cute, lovely specially in bathing suits and really practical!
I don't think your problem is about breast, it's about loving yourself as you are and being more confident. If you can't consider your breasts beautiful, I'm sure you have a lot more to look at and feel good about.
Smile