HELP!!!

Okay so my husband and I have been together for almost 6 years and married for almost 2. I have been wanting to start a family for about 6 months now and he wasn't sure about it. Well today he told me he was ready and wanted to start a family and it kinda threw me into shock! Idk how I feel about having a child now and all these things are running through my mind!! I talked to him about it and he said he will wait for me to be 100% sure. Is it just my anxiety getting in the way of things again? I need advice!!