In your 30s, if you are waiting to have kids for various reasons, you really need to stop delaying. Your probability of successfully having kids goes down every year, and by your early 40s your options for medical help if you have infertility stop being available because even those interventions lose effectiveness.
If you want kids, just have the kids. You're not going to care that you were being responsible and waiting when you find out waiting means you never get to have them.
If you want kids, just have the kids. You're not going to care that you were being responsible and waiting when you find out waiting means you never get to have them.