I say go for a C. C is a lot bigger than a lot of people realize. Don't go for a D because, as you may know now, you won't be able to shop at Victoria's Secret (BEST STORE EVER!!!

) I've had a full C cup since I was 14

and I find that the Victoria's Secret C is actually a B and their D's only come in a few sizes. Lately I've lost some weight and mind have gone down to a smaller C, so I'm able to shop there more.
My mom had breast reduction done, she had large D's at the time. Her bras were leaving streaks in her shoulders really deep, and it hurt her back. If you do get it, just make sure you take it easy! My mom didn't and the next day she was back in the hospital with a blood clot, so they had to tube her and she was on bedrest for a week.