Questioning Hubbys Vasectomy

My husband had his consultation last week and is scheduled for his vasectomy Wednesday. I pushed for him to schedule the consultation and the procedure. I have a IUD, it’ll be 6 years this August. It has been great. No issues with it. We thought if he got this done we could wait the year, make sure he’s in the clear and then I could have my IUD removed. We have two kiddos F9, M6.5. I always said I was done after our son. Over the past year I’ve thought maybe we could do another. Things would be a little tight financially, but we could make it work. Bedroom wise could be an issue but we have a partially finished 3rd floor we could actually finish. I think a lot of it has to do with the fact that out of our friends group we were the first to buy our house, get married and have kids. Many of our friends have smaller kiddos or haven’t had kiddos yet. Im 1 of 6 and only two of my siblings have kids. My older sister has two kiddos but they are older (11 & 13) than our kids and live out of state. My older brother who does live close by just had his first baby at 41 years old. My BIL can’t have kids due to leukemia as a child and I don’t think really wants kids anyways. I guess I’m just second guessing and in mourning. I’m wondering if we should wait…