Kids or no kids ?

I have a 2 year old daughter of my own and my boyfriend and I have been together since she was just about to be 1 ( she is almost 3) …. He always told me he didn’t want kids- then recently before he had his last surgery he asked me if I wanted a baby out of the blue.. then after his surgery said that I didn’t need to refill my birth control if I didn’t want to.. but I was confused because he always said he didn’t want kids.. And then the 13th we went out to eat and I had asked him about getting my bc refilled ( still under the impression he didn’t want kids and was thinking maybe he was just in a state of confusion 🤣) but then he said that it was up to me and stated that my daughter was his daughter and that if he didn’t want kids he wouldn’t have chose to stay with us. So I had mentioned that it’s actually up to both of us considering the work we would have to put in to care for a baby and how much a baby can change a relationship also financial expenses. Ect… so I guess my question is what’s everyone’s opinion.. I LOVE kids especially my daughter. But how do I really know if he’s ready for a baby? He doesn’t have any kids of his own and I always assumed he wanted to keep it that way. We haven’t even considered or even talked about getting married. Is it too soon? We have an extremely healthy relationship and have never had problems with things like jealousy or hiding phone conversations… we have lived together for a year and a half and yet still haven’t had any issues. Is our relationship mature enough for us to take this next step.? Also I recently was diagnosed with thyroid cancer but the diagnosis did not occur until AFTER these conversations. I guess part of me is just scared because I don’t want him to feel rushed because I am sick. I am scheduled for surgery next month to remove the cancer. I have tended and cared for him after two surgeries and even then I feel bad because he didn’t sign up for me getting sick.. but that’s just a me feeling. Any and all advice help’s thank you ladies ❤️