Opinions

I am 21 y/o and hubby & I are ttc #1. I recently went to my doctor since i have not have a period for 3 months. She asked me very rude why i am trying to conceive so young, I understand it's a normal question asked by your OB but I felt like she was trying to make me change my mind about it. I was prescribed provera to have a period and she never indicated what my next step would be. The only thing she did was try to chance my mind abt it like I said.  I have read a lot abt women being prescribed provera along with somethingg else to help ovulate & conceive. Do I have a right to be feeling like i do & also, would it be good to change my OB?? Help please