Any advise on enlargments in the uk please please reply, doing all the research i can?

I'm 20 years old and I have a 13 month old daughter, before I had her I was a 36e but since having her I have dropped to a 34c, I know c is average size but as mine were large they look hideous, they are not the of a 20 year old, they are completly shapeless and are getting me so depressed. I went to my gp but all they did was put me on anti depressents, I don't take my daughter swimming or let anyone see me as I feel like I look discusting, they are saggy and shapeless and horrible... Please can anyone give me any information about good surgeons to go to as I want to make sure I choose the right place. My friend suggested MYA or THE COSMETIC GROUP, but can anyone else help or give other suggestions, and just help me with advise, my gp is helpful at all