Am I Too skinny etc etc?

Im 5'9 115lbs..people always say im too skinny, but i eat very well, i can eat like a fat man! I've always been thin, and I feel fine..but still peoples negative comments make me wonder, and wish sometimes that i could be more womanly..but its not like i can just gain weight. And, i know theres probably nothing I can do about this (other than surgery which is not happening because it looks awful) but because im thin, i have pretty much no breast tissue, i wish i could at least be a full c..no way to really make that happen either tho? I'd be happier with the way i was if i at least had some TNA lol..oh the pointless things that are said on answers.