Should we have a 3 rd

Currently have 2 kids, a 7 yr old girl and almost 2 yr old boy. I was recently pregnant but lost it after a week. We hadn’t decided before hand if we were done having kids or if we wanted one more. Now I really feel I would like to have 3 and my husband is unsure. I am doing in home daycare and I really feel like if we are the timing is right now. My husband just thinks I am being emotional about it and I’m not seeing the bigger picture of cost and family dynamic. He basically wants me to plead my case about why I want another one and how we are going to make it work. I don’t have the same worries he does I think everything will be just fine. Am I just thinking with my heart and not my head? Is it me being selfish to want this? Any suggestions tips or uplifting messages. Thank you