The thought of losing my partner during childbirth has put a huge downer on the thought of kids in the future.
What has made you have those feelings?
I'm scared of losing my partner during childbirth.
It is understandable to be afraid.  It is also okay to not have kids either.
I'm not being a bad person for chose not to have kids, right? I'm sure it's my right to choose the right time to have kids.
That is right and if you are not comfortable you should talk to your partner about it. You will both decide when it is the right time and go over any kind of pros and cons of the situation.