Need to Rant!!!

So I'm 19 TTC my rainbow baby. Here's the thing I know I'm young ,I had my daughter when I was 15 and sometimes I feel like I'm not being taken seriously on here because I'm still young. I tried to join a teen's trying to concieve group but I'm seeing 16 and 14 year olds ttc!!!? Am I being a hypocrite for judging?? I mean that young is just.... idk. I just don't say anything because I'm young myself I had a miscarriage a year ago in july and I've been trying ever since but when I went to the fertility doctor I could hear them talking shit in the other room saying things like "this little girl is trying to have a baby!" That pissed me off I mean I have a fucking 3 year old I am a mother not a child!! So now I'm too nervous to go back in july.... any thoughts???