AIO I didn't get the response i thought I would get when I told my husband im finally ready to start trying for a baby

2nd edit because I was not clear : I would not purposefully knowingly “surprise” him by getting pregnant without having a conversation first - I meant it as what if we accidentally got pregnant. Edit : we’ve been together for 10 years, married for 3. I (26f) told my husband (29m) that I was finally ready to try having a child. It has been a topic that we have discussed, and I was always the one waiting because i was not ready. He always would tell me "im ready when you are". He expressed his want for a big family, lots of kids and to do it while we are young. In the past we have discussed how it would affect our finances and our responsibilities. With my 26th birthday just passing, I have been getting feelings of being ready to try. When I sat him down last night to tell him at dinner, he immediately started to go off on me about money and how its extremely expensive and how hes frustrated that I dont discuss my personal finances with him. (which I do, we both share a bank account and contribute, we just have separate cc's). The part that threw me for a loop and made me re think everything was the fact that there was not an ounce of happiness in his response. It was all very defensive and almost "barking" at me about money and he made it seem like money was the entire picture. I understand it is a large part of having a child, its expensive, but we are responsible and not dumb. I just was expecting HAPPINESS to come out of him when I told him about such a big thing that we have been thinking about. I am seriously re thinking everything now. What if I had a positive pregnancy test in my back pocket, about to surprise him? I feel so very sad, dismissed and confused. AIO??